Riesel primes of the form 161•2n-1

Reserved! This sequence is currently part of Multi Reservation 7: NPLB K300 Drive 3.

Current data

k , b : 161 , 2 Count : 36 Nash : 1273 Max n : 3,000,000 Date : 2025-03-05 Reserved : No Prime Left BehindNo Prime Left Behind/Reserved

2, 6, 18, 22, 34, 54, 98, 122, 146, 222, 306, 422, 654, 682, 862, 1010, 1346, 1582, 7890, 9714, 12498, 21742, 27810, 34798, 74382, 97746, 205370, 249710, 371426, 394974, 447330, 587570, 792702, 1553570, 1859586, 2373286

History

• 2025-03-05: Reserved by NPLB K300 Drive 3 from n = 3000000
• 2025-03-05: Checked n = 2300000 - 3000000, NPLB K300 Drive 1, released
• 2024-05-31: Found n = 2373286, Gary Barnes, NPLB K300 Drive 1
• 2024-05-16: Reserved by NPLB K300 Drive 1 from n = 2300000
• 2022-04-10: Checked n = 2200000 - 2300000, RPS Megabit Drive 2
• 2021-03-21: Checked n = 1 - 1000000, Gary Barnes, double check, results included
• 2019-08-18: Checked n = 2000000 - 2200000, RPS Megabit Drive 2
• 2015-06-19: Reserved by RPS Megabit Drive 2 from n = 2000000
• 2014-01-10: Checked n = 1950000 - 2000000, Michael Kwok, results included, released
• 2014-01-09: Checked n = 1880000 - 1950000, Michael Kwok, results included
• 2013-12-16: Checked n = 1818000 - 1880000, Michael Kwok, results included
• 2013-12-06: Found n = 1859586, Michael Kwok
• 2013-12-01: Checked n = 1757000 - 1818000, Michael Kwok, results included
• 2013-11-20: Checked n = 1697000 - 1757000, Michael Kwok, results included
• 2013-11-02: Checked n = 1646000 - 1697000, Michael Kwok, results included
• 2013-10-06: Checked n = 1600000 - 1646000, Michael Kwok, results included
• 2013-09-23: Checked n = 1560000 - 1600000, Michael Kwok, results included
• 2013-09-12: Reserved by Michael Kwok
• 2011-02-14: Checked n = 1500000 - 1560000, Michael Kwok, results included, released
• 2011-02-11: Found n = 1553570, Michael Kwok
• 2011-01-14: Checked n = 1420000 - 1500000, Michael Kwok, results included
• 2010-12-14: Checked n = 1345000 - 1420000, Michael Kwok, results included
• 2010-11-27: Checked n = 1260000 - 1345000, Michael Kwok, results included
• 2010-11-02: Checked n = 1210000 - 1260000, Michael Kwok, results included
• 2010-10-21: Checked n = 1118000 - 1210000, Michael Kwok, results included
• 2010-09-26: Checked n = 1060000 - 1118000, Michael Kwok, results included
• 2010-08-31: Checked n = 1000000 - 1060000, Michael Kwok, results included
• 2010-08-01: Reserved by Michael Kwok from n = 1000000
• 2009-11-03: Checked n = 910000 - 1000000, Predrag Minovic, released
• 2009-06-23: Checked n = 880000 - 910000, Predrag Minovic
• 2009-05-31: Checked n = 870000 - 880000, Predrag Minovic
• 2009-04-04: Checked n = 770000 - 870000, Predrag Minovic
• 2009-02-13: Checked n = 760000 - 770000, Predrag Minovic
• 2009-02-13: Checked n = 500000 - 760000, Predrag Minovic
• 2008-04-21: Found n = 792702, Predrag Minovic
• 2008-03-06: Found n = 587570, Predrag Minovic
• 2008-02-27: Reserved by Predrag Minovic from n = 500000
• 2006-03-23: Checked n = 250000 - 500000, Thomas Ritschel, released
• 2006-03-22: Found n = 447330, Patrick Keller
• 2006-03-09: Found n = 394974, Thomas Ritschel
• 2006-03-06: Found n = 371426, Thomas Ritschel
• 2006-02-06: Reserved by Thomas Ritschel
• 2004-06-18: Checked n = 200000 - 250000, Thomas Ritschel, released
• 2004-06-05: Found n = 249710, Thomas Ritschel
• 2004-06-01: Found n = 205370, Thomas Ritschel
• 2004-06-01: Checked n = 1 - 200000, Thomas Ritschel
• 2004-05-26: Reserved by Thomas Ritschel
• 1999-08-02: Found n = 34798, Tom Kuechler