Riesel primes of the form 4801•2n-1

Reserved! This sequence is currently reserved by: Riley Fisher

Current data

k , b : 4801 , 2 Count : 51 Nash : 2762 Max n : 200,000 Date : 2025-03-20 Reserved : Riley FisherRiley Fisher/Reserved

1, 7, 33, 39, 43, 53, 55, 59, 79, 81, 83, 109, 113, 131, 135, 147, 349, 385, 511, 673, 687, 1011, 1103, 1481, 1605, 1711, 1775, 1951, 2529, 2941, 4087, 6065, 7823, 8639, 10333, 11325, 11585, 13115, 13887, 17913, 25685, 35541, 54343, 83741, 106301, 113543, 128151, 157069, 181423, 216065, 219259

History

• 2025-03-20: Found n = 216065, 219259, Riley Fisher
• 2025-03-20: Reserved by Riley Fisher for n = 200000 - 400000
• 2012-03-07: Checked n = 20000 - 200000, Oscar Tutusaus Santandreu
• 2011-02-07: Checked n = 1 - 20000, Oscar Tutusaus Santandreu
• 2007-07-06: Checked n = 1 - 10000, Gary Barnes