2621

This number is a prime.

+ The largest known prime "Wilson quotient," a number of the form ((p-1)!+1)/p illustrating Wilson's theorem, is (2620!+1)/2621. It has more than 7800 decimal digits. [McCandless]

+ The smallest prime resulting by adding 1 to the left term of an amicable pair, i.e., (2620, 2924) [Loungrides]

+ The answer to "Solomon's Puzzle."

(There is one curio for this number that has not yet been approved by an editor.)

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