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

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MnStatusDetails
130087Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
27318271824.7old
2261535359512795748448130312787.52018-11-22 10:59:58
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000259 / 1566
Estimated T-Level: 30.8
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse4B7A14C3EF9B1B2A1013
Verified (Factored)2017-10-13kkmrkkblmbrbk4B7A14C3EF9B1B2A12377713
Verified2018-11-22rucio00CB8BA54E8955F4211481953
Verified2018-11-23arnaud00CB8BA54E8955F425197653
History
DateUserTypeResult
2021-07-04ATHNF-PP1
Start=2/7, B1=50000000, B2=5000000000
2018-11-23arnaudC-PRP
M130087/27318271/226153535951279574844813031 : 00CB8BA54E8955F4
PRP: Verified
PRP without proof (small exponent)
2018-11-22rucioC-PRP
M130087/27318271/226153535951279574844813031 : 00CB8BA54E8955F4
PRP: Verified
PRP without proof (small exponent)
2018-11-22Niels_Mache_NextcloudF-ECM
Factor: 226153535951279574844813031 / (ECM curve 3, B1=250000, B2=25000000)
2017-10-13kkmrkkblmbrbkC-PRP
M130087/27318271 : 4B7A14C3EF9B1B2A
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M130087/27318271 : 4B7A14C3EF9B1B2A
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M130087/27318271 : 4B7A14C3EF9B1B2A
PRP without proof (not generated)
2017-03-17kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12