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

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MnStatusDetails
2183833Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
43327246731032.0old
72846521235301639255372272.62025-01-31 09:29:15
19906505091844349923256632580.72022-03-22 06:08:41
149161576297209500494124812683.62025-01-31 09:29:15
ECM
DigitsB1Curves
2550000280 / 280
30250000165 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-09Oliver KruseE26564BE28D69BFF1013
Verified (Factored)2017-11-19kkmrkkblmbrbkE26564BE28D69BFF1139906613
Verified (Factored)2022-03-24_p95holder_77641E51A0E64BE02168090653
Verified (Factored)2022-03-28LaurV77641E51A0E64BE0251312353
Verified2025-02-05Perig77641E51A0E64BE0481684653
History
DateUserTypeResult
2025-02-05Massimo Cappelli (ik5pwa)CERT
PRP Certification
Proof certified good
2025-02-05PerigC-PRP
M2183833/4332724673/7284652123530163925537/1990650509184434992325663/14916157629720950049412481 : 77641E51A0E64BE0
PRP proof power = 7
PRP: Verified
Proof certified good
2025-01-31TJAOIF-ECM
Factor: 14916157629720950049412481 / (ECM curve 50, B1=250000, B2=251325195, Edwards Sigma=5179365676737963)
2025-01-31TJAOIF-ECM
Factor: 7284652123530163925537 / (ECM curve 17, B1=250000, B2=251325195, Edwards Sigma=8019938729866584)
2022-03-28aperson1CERT
PRP Certification
Proof certified good
2022-03-28LaurVC-PRP
M2183833/4332724673/1990650509184434992325663 : 77641E51A0E64BE0
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2022-03-24_p95holder_C-PRP
M2183833/4332724673/1990650509184434992325663 : 77641E51A0E64BE0
PRP: Verified (Factored)
PRP without proof (not generated)
2022-03-22_p95holder_F-ECM
Factor: 1990650509184434992325663 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-19kkmrkkblmbrbkC-PRP
M2183833/4332724673 : E26564BE28D69BFF
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-09Oliver KruseC-PRP
M2183833/4332724673 : E26564BE28D69BFF
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-25alpertronNF-PM1
B1=500000, B2=15000000, E=12