23

This number is a prime.

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

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]

Largest known prime which is the sum of first n Fibonacci primes (case n=4), i.e., 23=2+3+5+13. [Gupta]

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