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

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MnStatusDetails
27133867Factored
FactorDigitsBitsDate
1387384604023005328254747388343932103.52021-03-08 20:26:54
ECM
DigitsB1Curves
25500007 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2005-07-17Ahmer Ali87715937F08EC0142713147
Verified (Factored)2012-01-04GrunwalderGIMP87715937F08EC0147862908
P-1 factors
DateFactorB1B2
2021-03-081387384604023005328254747388343913500000
2021-05-211387384604023005328254747388343913500001350000
History
DateUserTypeResult
2021-05-21firejugglerF-PM1
Factor: 13873846040230053282547473883439 / (P-1, B1=1350000)
2021-05-14firejugglerNF-PP1
Start=6/5, B1=500000, B2=23000000
2021-03-08firejugglerF-PM1
Factor: 13873846040230053282547473883439 / (P-1, B1=1350000)
2021-02-18mikrNF
no factor from 2^70 to 2^71
2017-03-22ramgeisNF
no factor from 2^69 to 2^70
2012-01-04GrunwalderGIMPC-LL
87715937F08EC014
2011-12-20Aaron HavilandNF
no factor from 2^68 to 2^69
2011-12-16David CampeauNF
no factor from 2^67 to 2^68