Proth primes of the form 1461•2n+1

Reserved! This sequence is currently part of Multi Reservation 25: PrimeGrid Proth Prime Search Extended.

Current data

k , b : 1461 , 2 Type : 3 Count : 32 Nash : 1347 Max n : 2,000,000 Date : 2024-10-15 Reserved : PrimeGridPrimeGrid/Reserved

3, 7, 12, 27, 36, 43, 51, 55, 75, 87, 301, 303, 847, 991, 1131, 1323, 1407, 2971, 4351, 5547, 6951, 20247, 35547, 39660, 41935, 51675, 116460, 127356, 497676, 827871, 3373383, 3448423

History

• 2023-10-21: Checked n = 3322000 - 3486000, PrimeGrid Proth Mega Prime Search
• 2023-01-23: Found n = 3448423, Adrian Schori, PrimeGrid Proth Mega Prime Search
• 2021-07-25: Found n = 3373383, Jens Riemann, PrimeGrid Proth Mega Prime Search
• 2012-04-14: Found n = 827871, Kirill Scherbakov, PrimeGrid Proth Prime Search Extended
• 2009-06-22: Found n = 497676, Peter Kaiser, PrimeGrid Proth Prime Search Extended
• 1998-09-11: Found n = 20247, Ray Ballinger
• 1996-03: Found n = 6951, Patrick Demichel