Riesel primes of the form 153•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 1.

Current data

k , b : 153 , 2 Type : 3 Count : 62 Nash : 3189 Max n : 2,700,000 Date : 2024-10-04 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 4, 6, 7, 10, 11, 12, 19, 20, 22, 23, 39, 66, 106, 120, 124, 151, 312, 411, 447, 474, 507, 574, 671, 787, 826, 979, 1690, 1954, 2047, 3003, 4323, 4426, 5903, 6267, 6846, 14550, 17470, 21520, 31711, 36724, 45291, 45654, 51778, 55420, 63439, 68451, 78423, 109696, 125128, 130710, 169836, 192900, 195028, 383083, 545716, 800567, 894504, 1215327, 1245154, 2522271, 2581916

History

• 2024-08-17: Found n = 2581916, Gary Barnes, NPLB K300 Drive 1
• 2024-07-14: Found n = 2522271, Florian Piesker, NPLB K300 Drive 1
• 2024-05-16: Reserved by NPLB K300 Drive 1 for n > 2300000
• 2022-04-10: Checked to n = 2300000, RPS Megabit Drive 2
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-08-18: Checked to n = 2200000, RPS Megabit Drive 2
• 2011-07-24: Found n = 1245154, David Metcalfe, RPS Megabit Drive 2
• 2011-07-13: Found n = 1215327, Larry Soule, RPS Megabit Drive 2
• 2011-04-28: Reserved by RPS Megabit Drive 2 for n > 1000000
• 2009-09-14: Checked to n = 1000000, RPS 9ks Drive, released
• 2009-06-12: Found n = 894504, Carlos Eduardo Pinho, RPS 9ks Drive
• 2009-01-15: Found n = 800567, Predrag Minovic, RPS 9ks Drive
• 2007-12-03: Reserved by RPS 9ks Drive from n = 700000
• 2007-02-02: Checked to n = 700000, Thomas Masser, released
• 2005-10-05: Checked to n = 700000, Thomas Masser
• 2005-05-11: Found n = 545716, Thomas Masser
• 2005-03-13: Found n = 383083, Thomas Masser
• 2005-01-10: Checked n = 200000 - 210000, Steven Harvey, released
• 2005-01-06: Checked to n = 300000, Thomas Masser
• 2005-01-04: Checked n = 200000 - 300000, Thomas Masser
• 2004-06-18: Checked to n = 250000, Thomas Ritschel, released
• 2004-06-06: Found n = 195028, Thomas Ritschel
• 2004-06-06: Found n = 192900, Thomas Ritschel
• 2004-06-02: Found n = 169836, Thomas Ritschel
• 2004-05-26: Reserved by Thomas Ritschel
• 2000-04-28: Found n = 78423, Bouk de Water
• 2000-01-16: Found n = 68451, Bouk de Water
• 2000-01-12: Found n = 63439, Bouk de Water
• 1999-12-14: Found n = 55420, Bouk de Water
• 1999-11-30: Found n = 51778, Bouk de Water
• 1999-11-21: Found n = 45654, Bouk de Water
• 1999-11-21: Found n = 45291, Bouk de Water