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

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MnStatusDetails
8435159Factored
FactorDigitsBitsDate
126586428890307711920617944328931485739940129.92023-01-08 05:36:51
ECM
DigitsB1Curves
25500003 / 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)2000-05-17Paul MazumdarE29DDCA22B729F6E7862900
Verified (Factored)2003-02-24Luigi MorelliE29DDCA22B729F6E3740646
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-13Perig29975E8790F26EA41654449953
P-1 factors
DateFactorB1B2
2023-01-08126586428890307711920617944328931485739926000001963347750
History
DateUserTypeResult
2023-01-14iwesCERT
PRP Certification
Proof certified good
2023-01-13PerigC-PRP
M8435159/1265864288903077119206179443289314857399 : 29975E8790F26EA4
PRP proof power = 8
PRP: Verified
Proof certified good
2023-01-08yoyorocks1F-PM1
Factor: 1265864288903077119206179443289314857399 / (P-1, B1=2600000, B2=1963347750)
2021-12-15GdSNF-PM1
B1=1023734, B2=30712007, e=12
2021-12-04-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-05SRBaseNF
no factor from 2^71 to 2^72
2021-08-26SRBaseNF
no factor from 2^70 to 2^71
2021-08-20SRBaseNF
no factor from 2^69 to 2^70
2020-01-03TJAOINF
no factor from 2^68 to 2^69
2018-03-10monstNF
no factor from 2^67 to 2^68
2016-01-07snme2pm1NF
no factor from 2^66 to 2^67
2015-05-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-03-17lycornNF
no factor from 2^64 to 2^65
2012-07-29bcp19NF-PM1
B1=100000, B2=1825000, E=6
2009-07-09Carsten KossendeyNF-PM1
B1=45000, B2=675000, E=6