Proth primes of the form 3125•2n+1

Reserved! This sequence is currently part of Multi Reservation 24: PrimeGrid Proth Mega Prime Search.

Current data

k , b : 3125 , 2 Count : 28 Nash : 1150 Max n : 3,450,000 Date : 2023-02-14 Reserved : PrimeGridPrimeGrid/Reserved

17, 29, 39, 123, 131, 143, 149, 167, 221, 303, 543, 593, 2331, 2823, 3401, 3843, 10637, 11199, 13769, 24293, 25407, 94073, 147089, 168927, 1583223, 2697651, 2867399, 3124079

History

• 2019-09-24: Checked to n = 3322000, PrimeGrid Fermat Divisor Search
• 2019-09-13: Found n = 3124079, Dave Sunderland, PrimeGrid
• 2019-09-11: Found n = 2867399, Ricky L Hubbard, PrimeGrid
• 2019-09-11: Found n = 2697651, Seonghwan Kim, PrimeGrid
• 2019-09-08: Found n = 1583223, Brian D. Niegocki, PrimeGrid
• 2019-09-08: Checked to n = 1550000, PrimeGrid Fermat Divisor Search