Riesel primes of the form 923•2n-1

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

Current data

k , b : 923 , {{{Rb}}} Count : 57 Nash : 2640 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 8, 10, 12, 22, 158, 164, 220, 238, 358, 430, 458, 634, 640, 836, 1492, 1942, 1964, 2768, 3146, 4330, 4572, 4834, 5058, 5158, 9864, 14744, 15820, 25880, 26036, 30358, 31158, 32774, 35704, 36086, 36770, 50846, 54568, 63422, 66398, 75478, 79328, 86666, 97092, 104854, 117270, 145640, 152852, 199370, 296612, 503892, 549734, 597546, 977574, 1181030, 1480444

[[Category:Riesel {{{Rb}}}|#.....00923]][[Category:Riesel {{{Rb}}} Missing-range‎|#.....00923]]

History

• 2017-10-10: Found n = 1480444, Ricky L. Hubbard
• 2012-05-19: Found n = 1181030, Brian Lody
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-07-11: Checked to n = 1000000, NPLB Drive 7, released
• 2011-06-26: Found n = 977574, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-21: Found n = 597546, David James
• 2008-12-19: Reserved by NPLB Drive 7, for 600000<n<=1000000
• 2008-11-16: Found n = 549734, Gary Barnes
• 2008-07-21: Found n = 503892, 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
• 2004-12-30: Found n = 199370, Steven Harvey
• 2003-05-19: Found n = 117270, Steven Harvey
• 2003-01-07: Found n = 104854, Steven Harvey
• 2002-06-26: Found n = 97092, Andrew J. Rupinski
• 2001-06-28: Found n = 86666, Kimmo Herranen
• 2001-06-27: Found n = 79328, Kimmo Herranen
• 2001-06-27: Found n = 75478, Kimmo Herranen