22222...22221 (100-digits)
This number is a prime.
2222222222 2222222222 2222222222
2222222222 2222222222 2222222222 2222222222 2222222222 2222222222 2222222221
The smallest 100-digit near-repdigit (other than
near-repunit) prime. [Wesolowski]
(There are 2 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell