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

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MnStatusDetails
1826063Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
43825513825.4old
10910397733671340.02008-07-15 07:47:05
82821381945084786095932272.82021-04-09 16:12:26
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
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-02KrieselB5155A1A7321E824013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse731BA059B63680112013
Verified (Factored)2017-11-06kkmrkkblmbrbk731BA059B6368011248382013
Verified2021-04-10XZTB5155A1A7321E8243115349453
History
DateUserTypeResult
2025-09-03LynnUnownCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
B5155A1A7321E824
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2021-04-10Ben DeloCERT
PRP Certification
Proof certified good
2021-04-10XZTC-PRP
M1826063/43825513/1091039773367/8282138194508478609593 : B5155A1A7321E824
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-09TJAOIF-ECM
Factor: 8282138194508478609593 / (ECM curve 12, B1=50000, B2=6600000)
2017-11-06kkmrkkblmbrbkC-PRP
M1826063/43825513/1091039773367 : 731BA059B6368011
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1826063/43825513/1091039773367 : 731BA059B6368011
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 1091039773367