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

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MnStatusDetails
1979189Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
14250160811030.4old
17233492513376545902066301132890.52024-04-29 09:50:21
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-02KrieselE03140DC26A93BC5013
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse8DE5D046472806CE1013
Verified (Factored)2017-11-12kkmrkkblmbrbk8DE5D046472806CE11196813
Verified2024-05-01Naegi MakotoE03140DC26A93BC52191426753
History
DateUserTypeResult
2025-09-03KrieselCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
E03140DC26A93BC5
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-05-01ma2gikeilCERT
PRP Certification
Proof certified good
2024-05-01Naegi MakotoC-PRP
M1979189/1425016081/1723349251337654590206630113 : E03140DC26A93BC5
PRP proof power = 7
PRP: Verified
Proof certified good
2024-04-29TJAOIF-ECM
Factor: 1723349251337654590206630113 / (ECM curve 33, B1=250000, B2=40000000, Sigma=6497488844563471)
2023-09-01Kevin_9611NF-PM1
B1=1000000, B2=1685121900
2022-08-13USAFSSNF-PM1
B1=88000, B2=95986800
2017-11-12kkmrkkblmbrbkC-PRP
M1979189/1425016081 : 8DE5D046472806CE
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1979189/1425016081 : 8DE5D046472806CE
PRP: Verified (Factored)
PRP without proof (not generated)