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

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MnStatusDetails
3437713Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
55003409825.7old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-06alpertronED13EF58122615471106265053
Verified2017-11-22Oliver KruseED13EF58122615471203293853
History
DateUserTypeResult
2022-05-06LordJuliusNF
no factor from 2^66 to 2^67
2022-05-06LordJuliusNF
no factor from 2^65 to 2^66
2022-05-06LordJuliusNF
no factor from 2^64 to 2^65
2022-05-06LordJuliusNF
no factor from 2^63 to 2^64
2022-05-06LordJuliusNF
no factor from 2^62 to 2^63
2022-01-15JossNF-PM1
B1=1000000, B2=114656850
2021-04-01JossNF
no factor from 2^67 to 2^68
2021-03-16JossNF
no factor from 2^65 to 2^66
2021-03-16JossNF-PM1
B1=343771, B2=3781484, E=6
2017-11-22Oliver KruseC-PRP
M3437713/55003409 : ED13EF5812261547
PRP: Verified
PRP without proof (not generated)
2017-11-06alpertronC-PRP
M3437713/55003409 : ED13EF5812261547
PRP: Verified
PRP without proof (not generated)