If you want to make sure it is unique, I would suggest you use a GUID instead on Int64.
D
dbaechtel
@dbaechtel
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random unique number [mysql] -
TIL...... [modified]WolramAlpha say that the equation p^2 = 24*d*e+1 is a hyperboloid of one sheet which means that it is of the form x^2/a^2 + y^2/b^2 - z^2/c^2 = 1