generalized Cullen prime
(another Prime Pages' Glossary entries)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

A generalized Cullen prime is any prime that can be written in the form n*bn+1 with n+2 > b. E.g., 669*2128454+1 = 42816*842816+1.

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