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

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Exponent Range:










MnStatusDetails
1784683Factored
FactorDigitsBitsDate
90777810361604573433430812582.92020-01-06 09:54:12
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)Andre de BoerDBC6127AAF4F83A20
Verified (Factored)1998-12-06Jim SimpsonDBC6127AAF4F83A21336811
Verified (Factored)2015-07-01MadPooDBC6127AAF4F83A21743754
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-01-06mrh8348D5B4D4443C941118639053
Verified2020-01-07marssystems8348D5B4D4443C94168635353
History
DateUserTypeResult
2020-01-07marssystemsC-PRP
M1784683/9077781036160457343343081 : 8348D5B4D4443C94
PRP: Verified
PRP without proof (not generated)
2020-01-06mrhC-PRP
M1784683/9077781036160457343343081 : 8348D5B4D4443C94
PRP: Verified
PRP without proof (not generated)
2020-01-06daveward2005F-ECM
Factor: 9077781036160457343343081 / (ECM curve 3, B1=50000, B2=5000000)
2019-07-31TJAOINF
no factor from 2^67 to 2^68
2018-10-19JossNF-PM1
B1=1784683, B2=196315130, E=12
2018-07-02JossNF-PM1
B1=1784683, B2=178468300, E=12
2018-01-08TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-09-12ramgeisNF
no factor from 2^65 to 2^66
2015-07-01MadPooC-LL
DBC6127AAF4F83A2
2015-06-03mikrNF-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=171928
2014-05-09JossNF-PM1
B1=135964
2014-04-10-Anonymous-NF-PM1
B1=100000
2011-02-07Carsten KossendeyNF-PM1
B1=95000, B2=1615000, E=6
2010-10-16GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-22Architects CubedNF
no factor from 2^60 to 2^61