23

This number is a prime.

Just showing those entries submitted by 'Gupta': (Click here to show all)

Kristen Eller ©2002
+ 23 is the only prime number p such that p! is p digits long. [Gupta]

+ The smaller prime of the smallest set of two consecutive multidigit primes (23, 29) whose sum of digits (5, 11) is another set of two distinct primes. [Gupta]

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

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