25692...21601 (42-digits)
This number is a prime.
25 6923577521 0588780886 1147722423 5621321601
A prime number expressed as 7^7^7 - 6. [Patterson]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
25 6923577521 0588780886 1147722423 5621321601
A prime number expressed as 7^7^7 - 6. [Patterson]