Riesel primes of the form 507•2n-1

Reserved! This sequence is currently part of Multi Reservation 8: NPLB Drive 17.

Current data

k , b : 507 , 2 Type : 3 Count : 80 Nash : 3502 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 2, 4, 5, 9, 14, 18, 26, 28, 29, 38, 52, 54, 108, 126, 129, 141, 272, 482, 577, 1009, 1049, 1246, 1521, 2114, 2201, 2229, 2756, 2858, 4758, 4948, 5836, 6064, 6196, 7485, 9073, 14753, 22908, 23344, 24638, 31184, 31529, 32954, 37452, 37538, 43306, 58994, 66524, 67872, 81349, 89228, 93161, 95168, 113332, 115057, 116158, 123646, 139829, 150622, 151254, 156349, 217588, 234304, 238177, 241173, 273813, 306774, 473865, 505096, 511794, 562132, 638296, 926613, 945498, 1127304, 1192088, 1295094, 1703122, 1746026, 2244237

History

• 2023-01-16: Found n = 2244237, Florian Piesker
• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-04-07: Found n = 1746026, William Byerly
• 2022-03-19: Found n = 1703122, Florian Piesker
• 2013-08-18: Found n = 1295094, Gary Barnes
• 2013-04-05: Found n = 1192088, Gary Barnes
• 2012-03-14: Found n = 1127304, Jussi Heino
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-10-30: Found n = 945498, Lennart Vogel
• 2010-10-28: Found n = 926613, Lennart Vogel
• 2009-02-16: Found n = 638296, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-11-30: Found n = 562132, Gary Barnes
• 2008-07-27: Found n = 511794, Gary Barnes
• 2008-06-18: Found n = 505096, James P. Burt
• 2008-06-15: Found n = 473865, Bruce E. Slade
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2004-11-01: Found n = 241173, Steven Harvey
• 2004-11-01: Found n = 238177, Steven Harvey
• 2004-11-01: Found n = 234304, Steven Harvey
• 2004-11-19: Found n = 217588, Steven Harvey
• 2003-06-27: Found n = 123646, Steven Harvey
• 2003-03-21: Found n = 116158, Steven Harvey
• 2003-03-21: Found n = 115057, Steven Harvey
• 2003-03-21: Found n = 113332, Steven Harvey
• 2001-12-13: Found n = 95168, Kimmo Herranen
• 2001-12-12: Found n = 93161, Kimmo Herranen
• 2001-12-12: Found n = 89228, Kimmo Herranen
• 2001-12-10: Found n = 81349, Kimmo Herranen