Riesel primes of the form 313•2n-1

Reserved! This sequence is currently part of Multi Reservation 26: NPLB Drive 19.

Current data

k , b : 313 , 2 Count : 39 Nash : 1437 Max n : 3,100,000 Date : 2024-08-15 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

3, 7, 19, 27, 71, 99, 115, 159, 163, 183, 563, 771, 1107, 2807, 4795, 5091, 5223, 6763, 7359, 7535, 8055, 10531, 18843, 29559, 44003, 47307, 62203, 67363, 67767, 84179, 123731, 135463, 261255, 508091, 1137387, 1456431, 1703119, 2817751, 3107219

History

• 2024-09-22: Found n = 3107219, Göran Schmidt, NPLB Drive 19
• 2023-03-07: Reserved by NPLB Drive 19, for 3000000<n<4000000
• 2022-06-03: Checked to n = 3000000, NPLB Drive 15, released
• 2021-12-02: Found n = 2817751, Tore Zachariassen
• 2014-12-29: Reserved by NPLB Drive 15, for n=2000000-3000000
• 2013-04-04: Checked to n = 2000000, Lennart Vogel, released
• 2013-04-02: Found n = 1703119, Lennart Vogel
• 2013-04-01: Reserved by Lennart Vogel, for 1500000<n<2000000
• 2013-04-01: Found n = 1456431, Lennart Vogel
• 2013-03-31: Reserved by Lennart Vogel for 1300000<n<1500000
• 2012-10-10: Checked to n = 1300000, Gary Barnes, released
• 2012-09-25: Reserved by Gary Barnes, for 1200000<n<1300000
• 2011-06-26: Checked to n = 1202547, Johnathan Chu, released
• 2011-04-17: Checked to n = 1160000, Johnathan Chu
• 2011-03-19: Found n = 1137387, Johnathan Chu
• 2011-03-11: Checked to n = 1120000, Johnathan Chu
• 2011-02-09: Checked to n = 1090000, Johnathan Chu
• 2011-01-11: Checked to n = 1060000, Johnathan Chu
• 2010-12-07: Reserved by Johnathan Chu, to n=1100000
• 2010-11-27: Reserved by Johnathan Chu, for 1000000<n<1020000
• 2009-08-27: Checked to n = 1000000, Michael Kwok, released, results included
• 2009-07-25: Checked to n = 995000, Michael Kwok, results included
• 2009-06-06: Checked to n = 950000, Michael Kwok, results included
• 2009-05-12: Checked to n = 930000, Michael Kwok
• 2009-04-12: Checked to n = 900000, Michael Kwok, results included
• 2009-02-19: Checked to n = 836000, Michael Kwok, results included
• 2009-01-16: Checked to n = 780000, Michael Kwok, results included
• 2008-12-14: Checked to n = 710000, Michael Kwok, results included
• 2008-11-10: Checked to n = 600000, NPLB Drive 3, released
• 2008-11-01: Checked to n = 650000, Michael Kwok, results included
• 2008-09-10: Reserved by Michael Kwok, for 600000<n<1000000
• 2008-06-03: 508091 confirmed, Glenn C. Kaiser
• 2008-03-01: Reserved by NPLB Drive 3, for 260000<n<600000
• 2007-08-23: Found n = 508091, Peter Benson
• 2003-06-03: Found n = 123731, Steven Harvey
• 2001-07-09: Found n = 84179, Sander Hoogendoorn
• 2001-02-20: Found n = 67767, Steven Harvey
• 2001-02-20: Found n = 67363, Steven Harvey
• 2001-02-20: Found n = 62203, Steven Harvey