Riesel primes of the form 939•2n-1

Reserved! This sequence is currently part of Multi Reservation 3: NPLB Drive 18.

Current data

k , b : 939 , 2 Type : 3 Count : 50 Nash : 2452 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 5, 13, 35, 37, 40, 77, 79, 127, 131, 191, 245, 329, 385, 460, 1103, 1271, 1447, 1481, 1483, 2171, 3833, 10549, 10933, 13085, 16073, 17533, 29933, 30445, 31924, 35872, 36071, 37825, 49307, 59935, 68503, 149765, 190033, 306571, 319816, 331229, 458239, 497824, 558605, 708275, 1142083, 1149940, 1358015, 1386755, 1532143

History

• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2018-12-02: Found n = 1532143, Max Dettweiler
• 2014-12-19: Found n = 1386755, Lennart Vogel
• 2014-10-19: Found n = 1358015, Lennart Vogel
• 2012-04-23: Found n = 1149940, Lennart Vogel
• 2012-04-22: Found n = 1142083, Vaughan Davies
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2009-08-13: Found n = 708275, Ian M. Gunn
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-11-24: Found n = 558605, Gary Barnes
• 2008-07-09: Found n = 497824, Gary Barnes
• 2008-05-25: Found n = 458239, Gary Barnes
• 2008-03-25: Checked to n = 333200, NPLB Drive 2, released
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-09-27: Found n = 190033, Steven Harvey