17

This number is a prime.

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

Prime Numbers CD Image J. Neptune © 1994

17 is the smallest prime of the form (n-1)^n mod n^(n-1), for n=4. The next such prime is 73, for n=6. [Ahmed]

The smallest emirp n such that the n-th Fibonacci number is also an emirp. [Ahmed]