17

This number is a prime.

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

Prime Numbers CD Image J. Neptune © 1994

17 is the only odd prime p such that p + sod(p) and p - sod(p) are square numbers (5² and 3², respectively). [Rivera]

The smallest automorphic prime, i.e., a prime p such that p is the kth prime and p ends in k. [Russo and Rivera]

17 is the minimal prime solution as sum of three distinct triangular integers: 17=1+6+10. [Rivera]