Riesel primes of the form 777•2n-1

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

Current data

k , b : 777 , 2 Type : 3 Count : 58 Nash : 2743 Max n : 2,200,000 Date : 2024-07-30 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

1, 6, 10, 12, 18, 20, 21, 25, 52, 56, 58, 78, 101, 108, 156, 162, 358, 486, 562, 645, 880, 1081, 1541, 1565, 1848, 2720, 2760, 2958, 3185, 4021, 5085, 5118, 5682, 9860, 10002, 11190, 23316, 24801, 25698, 25906, 28668, 43726, 61416, 75965, 82210, 88125, 160998, 169041, 247788, 314856, 633901, 686718, 808980, 874712, 1117120, 1340901, 2041710, 2076841

History

• 2023-03-23: Found n = 2076841, Max Dettweiler
• 2023-03-13: Found n = 2041710, Max Dettweiler
• 2023-01-21: Reserved by NPLB Drive 18, for 2000000<n<3000000
• 2023-01-21: Checked to n = 2000000, NPLB Drive 14, released
• 2014-09-15: Found n = 1340901, Gary Barnes
• 2012-04-15: Found n = 1117120, Brian Lody
• 2011-12-31: Reserved by NPLB Drive 14, for 1000000<n<=2000000
• 2011-02-08: Checked to n = 1000000, NPLB Drive 6, released
• 2011-01-01: Found n = 874712, Vaughan Davies
• 2010-11-16: Found n = 808980, Brian Lody
• 2009-05-27: Found n = 686718, Gary Barnes
• 2009-04-22: Found n = 633901, Gary Barnes
• 2008-12-22: Checked to n = 600000, NPLB Drive 1, released
• 2008-12-19: Reserved by NPLB Drive 6, for 600000<n<=1000000
• 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
• 2006-07-07: Found n = 247788, Tony Galvan
• 2004-11-01: Found n = 314856, Predrag Minovic
• 2001-06-02: Found n = 75965, Kimmo Herranen