Riesel primes of the form 219•2n-1

Reserved! This sequence is currently part of Multi Reservation 6: CRUS Liskovets-Gallot.

Current data

k , b : 219 , {{{Rb}}} Count : 18 Nash : 1069 Max n : 5,000,000 Date : 2022-03-04 Reserved : Conjectures 'R UsConjectures 'R Us/Reserved

7, 81, 381, 412, 657, 853, 1317, 3261, 3768, 6081, 14017, 19993, 25863, 31801, 40113, 48877, 558313, 2178673

[[Category:Riesel {{{Rb}}}|#.....00219]]

History

• 2021-04-23: Found n = 2178673, Gary Barnes
• 2017-05-14: Checked to n = 2102000, RPS 3rd Megabit Drive
• 2012-12-27: Checked to n = 1400000, Predrag Minovic, released
• 2012-09-15: Checked to n = 1200000, Predrag Minovic
• 2012-08-20: Checked to n = 1080000, Predrag Minovic
• 2005-04-26: Found n = 558313, Thomas Masser
• 1998-11-08: Found n = 48877, Kimmo Herranen
• 1998-11-05: Found n = 40113, Kimmo Herranen
• 1998-11-04: Found n = 31801, Kimmo Herranen
• 1998-11-03: Found n = 25863, Kimmo Herranen