Williams primes of the form 4•3n+1

Reserved! This sequence is currently reserved by: Matthias Baur

Current data

Base : 3 Count : 23 Max n : 1,000,000 Date : 2019-07-28 Reserved : Matthias BaurMatthias Baur/Reserved

1, 2, 3, 6, 14, 15, 39, 201, 249, 885, 1005, 1254, 1635, 3306, 3522, 9602, 19785, 72698, 233583, 328689, 537918, 887535, 980925

Remarks :

The sequence A005537 in OEIS

History

• 2019-07-28: Checked to n = 1000000, Matthias Baur
• 2019-07-12: Found n = 887535, Matthias Baur
• 2019-07-10: Found n = 980925, Matthias Baur
• 2019-06-04: Checked to n = 800000, Matthias Baur
• 2018-12-06: Checked to n = 600000, Matthias Baur
• 2005-11-29: Found n = 233583, Boris Iskra
• 1996-12-01: Found n = 19785, Chris Caldwell
• 1996-12-01: Found n = 9602, Chris Caldwell
• 1992: Found n = 3522, Chris Caldwell
• 1992: Found n = 3306, Chris Caldwell