Proth primes of the form 80•3n+1

Current data

k , b : 80 , 3 Count : 35 Nash : 3626 Max n : 200,000 Date : 2020-10-26

1, 3, 4, 5, 6, 10, 21, 35, 54, 71, 90, 202, 306, 346, 415, 419, 569, 1925, 3335, 4914, 5073, 5693, 5913, 21576, 34993, 35703, 37378, 47244, 49907, 78407, 117274, 149994, 175025, 198346, 199890

Remarks :

See also Williams 80•81n+1

History

• 2020-10-26: Checked to n = 200000, Karsten Bonath
• 2020-10-19: Checked to n = 50000, Karsten Bonath
• 2006-07-31: Found n = 175025, Peter Benson
• 2005-03-28: Found n = 149994, Peter Benson
• 2004-03-26: Found n = 117274, Peter Benson