Generalized Cullen primes of the form n•30n+1

Current data

ASCII format : n*30^n+1 Base : 30 Count : 22 Max n : 200,000 Date : 2023-04-27

1, 2, 3, 7, 14, 17, 39, 79, 87, 99, 128, 169, 221, 252, 307, 3646, 6115, 19617, 49718, 107263, 152520, 154164

History

• 2023-04-27: Checked n = 100001 - 200000, Mark Rodenkirch, double-check n = 100001 - 101757, released
• 2023-04-27: Found n = 154164, Mark Rodenkirch
• 2023-04-27: Found n = 152520, Mark Rodenkirch
• 2023-04-27: Found n = 107263, Mark Rodenkirch
• 2023-04-17: Checked n = 2 - 100000, Mark Rodenkirch, double-check
• 2023-04-01: Reserved by Mark Rodenkirch to n = 200000
• 2010: Checked n = 3400 - 101757, Günter Löh
• 2001-12-22: Found n = 49718, Günter Löh
• 2000-04-12: Found n = 19617, Ray Ballinger
• 2000-02: Found n = 6115, Günter Löh
• 2000-02: Found n = 3646, Günter Löh
• 2000: Checked n = 1 - 3400, Wilfrid Keller