56713...35243 (38-digits)

This number is a prime.

                                   56713727 8201564105 7722910123 8628035243

+ Wagstaff primes related to 'The New Mersenne Conjecture' are the indices of perfect numbers in a list of centered 9-gonal numbers; this one being the largest. [Homewood]

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

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