83339
This number is a prime.
A Wagstaff prime has a Jacobsthal index which is the same
as the exponent used to produce it. The Jacobsthal number
whose index is 83339 is the largest known Wagstaff prime,
as of 2018. [Homewood]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell