Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
2073607Factored
FactorDigitsBitsDate
36558320374220286487785672581.62020-03-11 09:39:22
ECM
DigitsB1Curves
255000073 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Travis MasonerC8EC5556733644BC0
Verified (Factored)1999-01-29Zach NealC8EC5556733644BC984002
Verified (Factored)2017-05-28kkmrkkblmbrbkC8EC5556733644BC2050426
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-03-12Jinyuan WangB4A3AB70EDA34E79155493253
Verified2020-03-12GunnarLuB4A3AB70EDA34E791193471453
History
DateUserTypeResult
2020-03-12GunnarLuC-PRP
M2073607/3655832037422028648778567 : B4A3AB70EDA34E79
PRP: Verified
PRP without proof (not generated)
2020-03-12Jinyuan WangC-PRP
M2073607/3655832037422028648778567 : B4A3AB70EDA34E79
PRP: Verified
PRP without proof (not generated)
2020-03-11Sergey NosovF-ECM
Factor: 3655832037422028648778567 / (ECM curve 1, B1=50000, B2=5000000)
2019-09-03mikrNF-PM1
B1=4000000, B2=200000000, E=12
2019-03-28chuenkitNF
no factor from 2^67 to 2^68
2018-11-11JossNF-PM1
B1=2257531, B2=41472140, E=6
2018-09-28JossNF-PM1
B1=2257531, B2=20736070, E=12
2018-02-23JossNF-PM1
B1=2257531, B2=4515062, E=6
2017-05-28kkmrkkblmbrbkC-LL
C8EC5556733644BC
2016-09-24JossNF-PM1
B1=2247531, B2=8990124, E=6
2016-09-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-07-06JossNF-PM1
B1=2247531, B2=4495062, E=6
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-05ramgeisNF
no factor from 2^65 to 2^66
2015-07-07JossNF-PM1
B1=2247531
2015-06-25JossNF-PM1
B1=2043210
2015-06-08JossNF-PM1
B1=1857464
2015-05-26JossNF-PM1
B1=1688604
2015-05-22JossNF-PM1
B1=1535095
2015-05-01JossNF-PM1
B1=1395541
2015-04-08JossNF-PM1
B1=1153340
2015-03-28VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-28VictordeHollanderNF
no factor from 2^63 to 2^64
2015-03-15JossNF-PM1
B1=866522
2015-03-12JossNF-PM1
B1=787748
2015-03-02JossNF-PM1
B1=716135
2015-02-25JossNF-PM1
B1=651032
2015-02-16JossNF-PM1
B1=591848
2015-02-14JossNF-PM1
B1=538044
2015-02-11JossNF-PM1
B1=404241
2015-01-31JossNF-PM1
B1=251003
2015-01-30JossNF-PM1
B1=228185
2015-01-29JossNF-PM1
B1=207441
2014-11-06JossNF-PM1
B1=165953
2013-09-01ramgeisNF
no factor from 2^62 to 2^63
2012-03-16Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-20James HeinrichNF-PM1
B1=135000, B2=3071250, E=6
2011-01-07JossNF-PM1
B1=50000
2010-12-26JossNF-PM1
B1=30000
2009-07-25USAFSSNF-PM1
B1=20000, B2=260000
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61