262657

This number is a prime.

+ When transposed to binary, this prime forms the palindrome 1000000001000000001; in base 512 it forms the repunit 111. [Dobb]

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

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell