Williams primes of the form 11•12n-1

Current data

Base : 12 Count : 16 Max n : 200,000 Date : 2024-08-28

1, 2, 21, 25, 33, 54, 78, 235, 1566, 2273, 2310, 4121, 7775, 42249, 105974, 138961

Remarks :

The sequence A079907 in OEIS

History

• 2024-08-28: Checked n = 2 - 100000, Mark Rodenkirch, double-check, released
• 2024-08-22: Reserved by Mark Rodenkirch for n = 2 - 100000, double-check
• 2015-03-20: Checked n = 1 - 200000, Robert Price
• 2006-10-30: Checked n = 1 - 5000, Hugo Platzer
• 2003: Found n = 1566, Robert G. Wilson