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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
42307Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4511315054196011548.7old
1683487669647979568973372477.22010-05-03 22:30:34
12908136585057944675815670427369907081459142136.62023-04-13 19:47:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000742 / 4588
Estimated T-Level: 35.8
TF below 2^114 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse867541C43E359DBB2013
Verified (Factored)2017-10-02kkmrkkblmbrbk867541C43E359DBB2013
Verified (Factored)2017-12-07ATH867541C43E359DBB23450513
Verified (Factored)2020-04-17Oliver Kruse556628AA72645EC923094253
Verified2023-04-13JacobZ556628AA72645EC932390353
P-1 factors
DateFactorB1B2
2023-04-13129081365850579446758156704273699070814591850000000693958618653300
History
DateUserTypeResult
2024-12-14masserNF-PP1
Start=162/67, B1=60000000, B2=59940000000
2024-12-13masserNF-PP1
Start=6/5, B1=60000000, B2=59940000000
2024-11-27masserNF-PP1
Start=2/7, B1=60000000, B2=59940000000
2023-04-13JacobZC-PRP
M42307/451131505419601/168348766964797956897337/129081365850579446758156704273699070814591 : 556628AA72645EC9
PRP: Verified
PRP without proof (small exponent)
2023-04-13JacobZF-PM1
Factor: 129081365850579446758156704273699070814591 / (P-1, B1=850000000, B2=693958618653300)
2020-04-17Oliver KruseC-PRP
M42307/451131505419601/168348766964797956897337 : 556628AA72645EC9
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M42307/451131505419601/168348766964797956897337 : 867541C43E359DBB
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M42307/451131505419601/168348766964797956897337 : 867541C43E359DBB
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M42307/451131505419601/168348766964797956897337 : 867541C43E359DBB
PRP without proof (not generated)
2016-09-19kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2010-05-03James HintzF-ECM
Factor: 168348766964797956897337