Proth primes of the form 643•2ⁿ+1

Reserved! This sequence is currently part of Multi Reservation 1: PrimeGrid Proth Prime Search.

Current data

`k` , `b` :	643 , 2
Count :	34
Nash :	1556
Max `n` :	4,850,000
Date :	2024-03-28
Reserved :	PrimeGridPrimeGrid/Reserved

4, 10, 14, 40, 74, 124, 280, 346, 410, 604, 806, 2318, 3358, 4508, 4586, 5738, 7174, 13006, 26798, 36940, 38770, 39244, 51500, 59116, 157808, 237350, 318958, 368558, 371354, 782318, 1272644, 2078306, 3030650, 3501974

2018-03-28: Found n = 3501974, Stefan Larsson, PrimeGrid Proth Mega Prime Search
2021-05-07: Found n = 3030650, Brian D. Niegocki, PrimeGrid Proth Prime Search
2014-04-27: Found n = 2078306, Randall Scalise, PrimeGrid Proth Prime Search
2011-11-14: Found n = 1272644, Jim Foody, PrimeGrid Proth Prime Search
2010-03-10: Found n = 782318, Senji Yamashita, PrimeGrid Proth Prime Search
2007-09-27: Found n = 371354, Steven Harvey
2008-01-07: Found n = 368558, Steven Harvey
2005-04-25: Found n = 318958, Payam Samidoost
2005-08-01: Found n = 237350, Steven Harvey
1998-07-07: Found n = 26798, Tadashi Taura
1993: Found n = 7174, Harvey Dubner