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  3. Largest Number You've Computed?

Largest Number You've Computed?

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  • M Matthew Dennis

    unless 21000000 - 1 is prime.

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #32

    It isn't. Mersenne primes always have prime exponents.

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    • M Matthew Dennis

      1000! see Calculate the Factorial of an Integer in C#[^]

      B Offline
      B Offline
      Bassam Abdul Baki
      wrote on last edited by
      #33

      Nice! Thank goodness for BigInteger.

      Web - BM - RSS - Math - LinkedIn

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      • L Lost User

        The other one. Logarithmic number system.

        B Offline
        B Offline
        Bassam Abdul Baki
        wrote on last edited by
        #34

        I figured. But the other distracted me. :)

        Web - BM - RSS - Math - LinkedIn

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        • OriginalGriffO OriginalGriff

          Cluck, cluck, cluck! I know about infinite numbers and the phase space of integers, so this thread in theory could never end. ;)

          The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

          B Offline
          B Offline
          Bassam Abdul Baki
          wrote on last edited by
          #35

          Try counting from infinity backwards.

          Web - BM - RSS - Math - LinkedIn

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          • B Bassam Abdul Baki

            Mine is: (165(43-1)/5+floor((43+3)/4)) % (1043) = 2,000,000,000,000,000,000,000,000,000,017,592,186,044,416

            Web - BM - RSS - Math - LinkedIn

            T Offline
            T Offline
            Thomas Daniels
            wrote on last edited by
            #36

            double.PositiveInfinity[^] A larger number isn't possible!

            The quick red ProgramFOX jumps right over the Lazy<Dog>.

            L 1 Reply Last reply
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            • T Thomas Daniels

              double.PositiveInfinity[^] A larger number isn't possible!

              The quick red ProgramFOX jumps right over the Lazy<Dog>.

              L Offline
              L Offline
              Lost User
              wrote on last edited by
              #37

              That isn't a number!

              T 1 Reply Last reply
              0
              • L Lost User

                That isn't a number!

                T Offline
                T Offline
                Thomas Daniels
                wrote on last edited by
                #38

                Oops! :sigh:

                The quick red ProgramFOX jumps right over the Lazy<Dog>.

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                • B Bassam Abdul Baki

                  Mine is: (165(43-1)/5+floor((43+3)/4)) % (1043) = 2,000,000,000,000,000,000,000,000,000,017,592,186,044,416

                  Web - BM - RSS - Math - LinkedIn

                  W Offline
                  W Offline
                  wizardzz
                  wrote on last edited by
                  #39

                  I'm not done yet, but I think my wedding bill is getting there.

                  Twitter[^]

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                  • B Bassam Abdul Baki

                    Mine is: (165(43-1)/5+floor((43+3)/4)) % (1043) = 2,000,000,000,000,000,000,000,000,000,017,592,186,044,416

                    Web - BM - RSS - Math - LinkedIn

                    H Offline
                    H Offline
                    H Brydon
                    wrote on last edited by
                    #40

                    When I was in college, we had a professor who had an interest in large primes. Out of a 4 x 8 sheet of plywood, we made him a giant "2" and presented it to him as an award for something. Does that count?

                    -- Harvey

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                    • B Bassam Abdul Baki

                      Try counting from infinity backwards.

                      Web - BM - RSS - Math - LinkedIn

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                      S Offline
                      Septimus Hedgehog
                      wrote on last edited by
                      #41

                      I tried. But there's nothing out there.

                      If there is one thing more dangerous than getting between a bear and her cubs it's getting between my wife and her chocolate.

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                      • B Bassam Abdul Baki

                        Mine is: (165(43-1)/5+floor((43+3)/4)) % (1043) = 2,000,000,000,000,000,000,000,000,000,017,592,186,044,416

                        Web - BM - RSS - Math - LinkedIn

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #42

                        I just computed the number of solutions (all solutions, not optimal ones) to the problem where this[^] was a solution (ie all coverings of the yellow cells with rectangles): 45784610596850816446599940930767916773480082964755799235445406076489339495199306 75894632264393946366064079016685237062250355511270045107847351110104043603327350 40030852263702858067598184403524385716937791795799506954654612463217212201690360 70982548681649300109601170578438603135655410339180977750692518018138012707693373 7505003365

                        1 Reply Last reply
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                        • B Bassam Abdul Baki

                          Mine is: (165(43-1)/5+floor((43+3)/4)) % (1043) = 2,000,000,000,000,000,000,000,000,000,017,592,186,044,416

                          Web - BM - RSS - Math - LinkedIn

                          M Offline
                          M Offline
                          M dHatter
                          wrote on last edited by
                          #43

                          ∞

                          Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and as it always has, rock crushes scissors. :)

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                          • T Thomas Daniels

                            Mine is 21000000 = 990065622929589825069792361630190325073362424178756733286639611453170948330948610305461455123464839148243150703458372388351065898941631492742256503157
                            290537231486937723287177549471366423897012584291448961471633841218863110379239805600774013627096055307053866717981233606159217927983273223643032286260
                            657430925691627858204283477200179449319005699514097510312526917394308961549314037842917671378079314795335742413161419492526463227046103105187267154344
                            632641553473282832884447626296639136101211942402510061343171652494945923275717722078109541163555632428562340139984401887212634039300347838271450001526
                            392320229012258910617229037066549822325526657074236467887628194407017819696756431326847303952947178641997730586792287821993064882303345065034596791221
                            523917555109275792203031674436344448176066521739250004626157456128525019107868885598538239591091028190475243782716932214211421239270034563950381235350
                            250311913322903570226372145672473702885218372967386543992665597857777244114711353422981871296063602342124838258072006674958033769065568092701436494004
                            477009798690062991574175490539021387229485951252745725843568693057429433187614880421258707050812109898106730960167331185511905319779689488277502333385
                            474039969174297188347576501021741278616607099138092026138181452968788842443522745722745810165356085948274800465038541381311864512793104409239664167647
                            305300960726816519669985583163924960253450803846226233415060476114953790220372111150760791409757457811339576926357615128826298343155141561825405071450
                            904969083569388243735037481368023790147322348964585936303091759379661486590792723567562062512969942701635647821602243367290434480760695218467382876202
                            927505824801529327493139658189985726667946143330659374336411381369262781055355514131860918961486402974778748508880160549702100345096024678742308819273
                            864162687251086992052277838707721304863610277948260856068796303905192240404646526613218905951232308872556447960474634162686268424027614311225363893314
                            258584609856383663203743877595505420097881377604232631662861910232459811384130060375377599339095227698245547651813789858771307842530857133022525317891
                            706868320941956052983552025902312629000323359271093979298894441465209382549702488057799005048947430386674809060826724550174964284440016934381319170930
                            839460354802896300645462227312779510715620237407643842490106080569307994163555798117162487871389746620126265220437895560389868814118422427995261241125
                            57747242833872593994076404

                            M Offline
                            M Offline
                            Member 4194593
                            wrote on last edited by
                            #44

                            With my bignum functions, I limited the usable size to 63356 bits (8192 BYTES or 2048 DWORDS), however the code can be expanded to hold the BIT count of a number in a DWORD. These functions include ADD, SUB, MUL, DIV, SQRT, AND, OR, XOR, Input long number (any base 2 to 64) and export any number (any base 2 to 64). OBTW they are fast - in MASM. Dave.

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                            • R Ravi Bhavnani

                              The largest number I tried to compute <edit>(in .NET 3.5)</edit> was Int64.MaxValue + 1.  :) /ravi

                              My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

                              T Offline
                              T Offline
                              Thomas Daniels
                              wrote on last edited by
                              #45

                              Easy!

                              UInt64 i = (ulong)Int64.MaxValue + 1;

                              The quick red ProgramFOX jumps right over the Lazy<Dog>.

                              R 1 Reply Last reply
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                              • T Thomas Daniels

                                Easy!

                                UInt64 i = (ulong)Int64.MaxValue + 1;

                                The quick red ProgramFOX jumps right over the Lazy<Dog>.

                                R Offline
                                R Offline
                                Ravi Bhavnani
                                wrote on last edited by
                                #46

                                True.  If you want to lose half the range of possible values. :) /ravi

                                My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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                                • R Ravi Bhavnani

                                  Sorry, I forgot to add "in .NET 3.5".  :) /ravi

                                  My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

                                  Richard DeemingR Offline
                                  Richard DeemingR Offline
                                  Richard Deeming
                                  wrote on last edited by
                                  #47

                                  Easy: this version[^] works in .NET 1.0! ;P


                                  "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                                  "These people looked deep within my soul and assigned me a number based on the order in which I joined" - Homer

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                                  • Richard DeemingR Richard Deeming

                                    Easy: this version[^] works in .NET 1.0! ;P


                                    "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

                                    R Offline
                                    R Offline
                                    Ravi Bhavnani
                                    wrote on last edited by
                                    #48

                                    :thumbsup: +5 /ravi

                                    My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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                                    • OriginalGriffO OriginalGriff

                                      I really wish you'd put that in a code block so it could be collapsed... ;)

                                      The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

                                      T Offline
                                      T Offline
                                      Thomas Daniels
                                      wrote on last edited by
                                      #49

                                      By the way, a code block can't be collapsed in messages, only in questions, answers and articles.

                                      The quick red ProgramFOX jumps right over the Lazy<Dog>.

                                      OriginalGriffO 1 Reply Last reply
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                                      • T Thomas Daniels

                                        By the way, a code block can't be collapsed in messages, only in questions, answers and articles.

                                        The quick red ProgramFOX jumps right over the Lazy<Dog>.

                                        OriginalGriffO Online
                                        OriginalGriffO Online
                                        OriginalGriff
                                        wrote on last edited by
                                        #50

                                        Stupid! If you can collapse them in one place, you should be able to collapse in all. Sometimes, I get teh feeling there are too many different codes for doing the same thing on this site... :laugh:

                                        The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

                                        "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                                        "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                                        T 1 Reply Last reply
                                        0
                                        • OriginalGriffO OriginalGriff

                                          Stupid! If you can collapse them in one place, you should be able to collapse in all. Sometimes, I get teh feeling there are too many different codes for doing the same thing on this site... :laugh:

                                          The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)

                                          T Offline
                                          T Offline
                                          Thomas Daniels
                                          wrote on last edited by
                                          #51

                                          OriginalGriff wrote:

                                          If you can collapse them in one place, you should be able to collapse in all.

                                          There's just one place to tell that[^]

                                          The quick red ProgramFOX jumps right over the Lazy<Dog>.

                                          OriginalGriffO 1 Reply Last reply
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