Generalized Cullen primes of the form n•81n+1

Current data

ASCII format : n*81^n+1 Base : 81 Count : 4 Max n : 280,000 Date : 2019-11-23

350, 73272, 126042, 178192

History

• 2023-05-14: Checked n = 1 - 100000, Mark Rodenkirch, double-checked and released
• ?: Checked n = 81810 - 280000, Thomas Ritschel, TOPS
• 2011-12-06: Found n = 178192, Thomas Ritschel, TOPS
• 2011-11-13: Found n = 126042, Thomas Ritschel, TOPS
• 2010-05-23: Found n = 73272, Günter Löh
• ?: Checked to n = 81809, (?)