Proth primes of the form 25•2n+1

Current data

k , b : 25 , 2 Count : 45 Nash : 2198 Max n : 1,780,000 Date : 2021-03-01

2, 4, 6, 10, 20, 22, 52, 64, 78, 184, 232, 268, 340, 448, 554, 664, 740, 748, 1280, 1328, 1640, 3314, 3904, 3938, 5152, 9522, 57488, 66872, 148060, 154254, 216092, 302194, 367294, 627710, 966414, 1211488, 1258562, 1298186, 2141884, 2583690, 2927222, 3733144, 4481024, 8456828, 8788628

History

• 2021-03-01: Found n = 8788628, Tom Greer, PrimeGrid (Official Announcement)
• 1979: Checked n = 1500 - 4000, Gordon V. Cormack, Hugh C. Williams
• 1979: Found n = 3938, Gordon V. Cormack, Hugh C. Williams
• 1979: Found n = 3904, Gordon V. Cormack, Hugh C. Williams
• 1979: Found n = 3314, Gordon V. Cormack, Hugh C. Williams
• 1979: Found n = 1640, Gordon V. Cormack, Hugh C. Williams