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

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MnStatusDetails
242747Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
27673159824.7old
645354065862011445.92008-07-21 09:14:46
1252846197548620491856.82014-08-15 10:43:30
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000209 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseD39A94AF8F259F263013
Verified2017-10-12kkmrkkblmbrbkD39A94AF8F259F2638302313
Verified2020-04-17Oliver Kruse4B215E64B19DCEDA316592553
Verified2024-02-03Wentao Huang4B215E64B19DCEDA31456653
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M242747/27673159/64535406586201/125284619754862049 : 4B215E64B19DCEDA
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-09Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-07-21Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M242747/27673159/64535406586201/125284619754862049 : 4B215E64B19DCEDA
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M242747/27673159/64535406586201/125284619754862049 : D39A94AF8F259F26
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M242747/known_factors : D39A94AF8F259F26
PRP without proof (not generated)
2014-08-15TJAOIF-ECM
Factor: 125284619754862049
2008-07-21J FeitsmaF
Factor: 64535406586201