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

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MnStatusDetails
2347271Factored
FactorDigitsBitsDate
1322486073320458889367198232786.82017-02-24 03:51:27
ECM
DigitsB1Curves
255000076 / 280
Estimated T-Level: 21.4 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joakim RosqvistD15DAA7208EF2E5A0
Verified (Factored)1999-03-26Daryl AndersonD15DAA7208EF2E5A1525303
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-12Oliver Kruse43C735F32FE1D89A1013
Verified2017-11-24kkmrkkblmbrbk43C735F32FE1D89A166662513
History
DateUserTypeResult
2018-03-18alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-11-24kkmrkkblmbrbkC-PRP
M2347271/132248607332045888936719823 : 43C735F32FE1D89A
PRP: Verified
PRP without proof (not generated)
2017-10-12Oliver KruseC-PRP
M2347271/132248607332045888936719823 : 43C735F32FE1D89A
PRP: Verified
PRP without proof (not generated)
2017-02-24bamF-ECM
Factor: 132248607332045888936719823 / (ECM curve 2, B1=50000, B2=5000000)
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-06VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-06VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-29Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-03-03BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61