Riesel primes of the form 563•2n-1

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

Current data

k , b : 563 , 2 Count : 50 Nash : 2349 Max n : 2,820,000 Date : 2024-03-09 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 4, 14, 16, 18, 20, 56, 66, 72, 76, 100, 114, 204, 392, 954, 1052, 1816, 1920, 1932, 1984, 2080, 2552, 2856, 3326, 3700, 4168, 4640, 16982, 22550, 28454, 39792, 52520, 64142, 67424, 101466, 170048, 220292, 251754, 320536, 380824, 491980, 550396, 664568, 683292, 837448, 877856, 901394, 1216134, 1293468, 1782872

History

• 2022-08-10: Checked to n = 2000000, NPLB Drive 13, released
• 2022-08-09: Reserved by NPLB Drive 17, for 2000000<n<3000000
• 2022-04-22: Found n = 1782872, Göran Schmidt
• 2013-08-14: Found n = 1293468, Gary Barnes
• 2013-05-11: Found n = 1216134, Gary Barnes
• 2011-08-04: Reserved by NPLB Drive 13, for 1000000<n<2000000
• 2010-11-11: Checked to n = 1000000, NPLB Drive 5
• 2010-09-01: Found n = 901394, Gary Barnes
• 2010-08-18: Found n = 877856, Lennart Vogel
• 2010-06-29: Found n = 837448, Vaughan Davies
• 2009-05-14: Found n = 683292, David James
• 2009-03-27: Found n = 664568, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1
• 2008-12-19: Reserved by NPLB Drive 5, for 600000<n<1000000
• 2008-11-23: Found n = 550396, Ian M. Gunn
• 2008-06-24: Found n = 491980, James P. Burt
• 2008-03-25: Checked to n = 333200, NPLB Drive 2
• 2008-03-15: Found n = 380824, James P. Burt
• 2008-01-22: Reserved by NPLB Drive 2, for 260000<=n<=333200
• 2008-01-21: Reserved by NPLB Drive 1, for 333201<=n<=600000
• 2002-12-16: Found n = 251754, Steven Harvey
• 2002-12-18: Found n = 220292, Steven Harvey
• 2002-11-22: Found n = 170048, Steven Harvey
• 2002-10: Found n = 101466, Steven Harvey
• 1999-10-20: Found n = 67424, Steven Harvey
• 1999-10-15: Found n = 64142, Steven Harvey
• 1999-10-12: Found n = 52520, Steven Harvey
• 1999-10-12: Found n = 39792, Steven Harvey