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

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MnStatusDetails
1782533Factored
FactorDigitsBitsDate
6807477896838892901696872479.22019-12-14 23:53:56
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ronald Pearl4F6F36BAB86C30860
Verified (Factored)1998-12-21Gary Hansen4F6F36BAB86C3086397056
Verified (Factored)2015-07-03MadPoo4F6F36BAB86C3086711616
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2019-12-15Christoph Zenger6968CC39AE4F78E0128569853
Verified2019-12-15Niels_Mache_Nextcloud6968CC39AE4F78E0142096853
History
DateUserTypeResult
2019-12-15Niels_Mache_NextcloudC-PRP
M1782533/680747789683889290169687 : 6968CC39AE4F78E0
PRP: Verified
PRP without proof (not generated)
2019-12-15Christoph ZengerC-PRP
M1782533/680747789683889290169687 : 6968CC39AE4F78E0
PRP: Verified
PRP without proof (not generated)
2019-12-14Chang Chia-TcheF-ECM
Factor: 680747789683889290169687 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7112764757207334)
2019-08-06TJAOINF
no factor from 2^67 to 2^68
2018-10-19JossNF-PM1
B1=1782533, B2=196078630, E=12
2018-07-02JossNF-PM1
B1=1782533, B2=178253300, E=12
2018-02-05TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-09-12ramgeisNF
no factor from 2^65 to 2^66
2015-07-03MadPooC-LL
4F6F36BAB86C3086
2015-05-30mikrNF-PM1
B1=2475400, B2=86660000, E=12
2015-05-14snme2pm1NF
no factor from 2^64 to 2^65
2015-05-14snme2pm1NF
no factor from 2^63 to 2^64
2014-09-19JossNF-PM1
B1=172014
2014-05-09JossNF-PM1
B1=136007
2014-04-10-Anonymous-NF-PM1
B1=100000
2011-02-01Carsten KossendeyNF-PM1
B1=95000, B2=1615000, E=6
2010-10-16GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-20Architects CubedNF
no factor from 2^60 to 2^61