near-repunit prime
(another Prime Pages' Glossary entries)
The Prime Glossary
Glossary: Prime Pages: Top 5000:
GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

A near-repunit prime is a prime all but one of whose digits are 1. E.g., 1171 and 11111111113.

Related pages (outside of this work)

Chris K. Caldwell © 1999-2019 (all rights reserved)