10909...90901 (33-digits)

This number is a prime.

                                        109 0909090909 0909090909 0909090901

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

+ A palindromic alternate-digit prime; nearly a SUPP prime except for a couple of bumps (also written as 1(09)1501). [Green]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell