11111...11111 (1121-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

Single Curio View: (Seek other curios for this number)

The smallest titanic near repunit palindromic prime. [Gupta]

Submitted: 2026-04-21 10:39:02; Last Modified: 2026-04-22 00:46:56.

Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean