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

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MnStatusDetails
18309659Factored
FactorDigitsBitsDate
32433806645435794619530782995710979936118.02019-03-17 01:35:30
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2004-03-16Sturle Sunde77A5723EB84908187291064
Verified (Factored)2007-04-23Roy Oswald77A5723EB849081812638756
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-08-17M Miller93B8D3ED7986B59C11255829953
Verified2020-08-21Jaytholomew93B8D3ED7986B59C14118453
P-1 factors
DateFactorB1B2
2019-03-173243380664543579461953078299571097993300008745000
History
DateUserTypeResult
2020-08-21JaytholomewC-PRP
M18309659/324338066454357946195307829957109799 : 93B8D3ED7986B59C
PRP: Verified
PRP without proof (not generated)
2020-08-17M MillerC-PRP
M18309659/324338066454357946195307829957109799 : 93B8D3ED7986B59C
PRP: Verified
PRP without proof (not generated)
2019-03-17USAFSSF-PM1
Factor: 324338066454357946195307829957109799 / (P-1, B1=330000, B2=8745000, E=12)
2017-09-15ramgeisNF
no factor from 2^68 to 2^69
2017-09-15ramgeisNF
no factor from 2^67 to 2^68
2016-03-23Mark RoseNF
no factor from 2^66 to 2^67