Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
1701461Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
54446753825.7old
585506226115665746621532375.62020-03-03 14:21:16
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-30alpertron8023BB170F59E2A41013
Verified (Factored)2017-10-18Oliver Kruse8023BB170F59E2A41130921913
Verified2020-03-04mnd96B3D6357BF4B79D2264467253
Verified2020-03-08roemer22016B3D6357BF4B79D224936053
History
DateUserTypeResult
2021-07-15Dylan DelgadoNF-PM1
B1=3000000, B2=273000000
2020-03-08roemer2201C-PRP
M1701461/54446753/58550622611566574662153 : 6B3D6357BF4B79D2
PRP: Verified
PRP without proof (not generated)
2020-03-04mnd9C-PRP
M1701461/54446753/58550622611566574662153 : 6B3D6357BF4B79D2
PRP: Verified
PRP without proof (not generated)
2020-03-03TJAOIF-ECM
Factor: 58550622611566574662153 / (ECM curve 60, B1=50000, B2=5000000)
2017-10-18Oliver KruseC-PRP
M1701461/54446753 : 8023BB170F59E2A4
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1701461/54446753 : 8023BB170F59E2A4
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12