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

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MnStatusDetails
3029711Factored
FactorDigitsBitsDate
2812038783614047317704237580493097.82017-06-27 14:35:46
ECM
DigitsB1Curves
255000012 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Michiel van Loon2FAAB2C0B3542E940
Verified (Factored)1999-05-16Bruce Mitchell2FAAB2C0B3542E941464319
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-28alpertron73F284611CD829881013
Verified2017-11-17Oliver Kruse73F284611CD82988185197913
P-1 factors
DateFactorB1B2
2017-06-2728120387836140473177042375804930000000
History
DateUserTypeResult
2022-08-21JossNF-PM1
B1=3029711, B2=354763500
2022-01-06JossNF-PM1
B1=1522969, B2=116447100
2021-02-26JossNF
no factor from 2^67 to 2^68
2021-02-18JossNF
no factor from 2^66 to 2^67
2021-02-18JossNF
no factor from 2^65 to 2^66
2017-11-17Oliver KruseC-PRP
M3029711/281203878361404731770423758049 : 73F284611CD82988
PRP: Verified
PRP without proof (not generated)
2017-09-28alpertronC-PRP
M3029711/281203878361404731770423758049 : 73F284611CD82988
PRP: Verified
PRP without proof (not generated)
2017-06-27mikrF-PM1
Factor: 281203878361404731770423758049 / (P-1, B1=3000000)
2017-05-02Gordon SpenceNF
no factor from 2^66 to 2^67
2016-04-29-Anonymous-NF-PM1
B1=205000, B2=5688750, E=12
2015-06-02ThaNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2010-10-17markrNF-PM1
B1=115000, B2=2357500, E=6
2010-10-12Sid & AndyNF
no factor from 2^61 to 2^62
2009-02-02Jayson KingNF
no factor from 2^60 to 2^61