Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2440447Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1315352124071236.9old
1168562137678838089132166.72020-07-14 09:18:12
ECM
DigitsB1Curves
255000092 / 280
Estimated T-Level: 21.6
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-13Oliver KruseD919B6AC4CC144521198793953
Verified (Factored)2017-11-28kkmrkkblmbrbkD919B6AC4CC1445213834453
Verified2020-07-17Kirill FrolovD919B6AC4CC144522116192753
Verified2020-07-18fre_gamesD919B6AC4CC14452236904553
History
DateUserTypeResult
2020-07-18fre_gamesC-PRP
M2440447/131535212407/116856213767883808913 : D919B6AC4CC14452
PRP: Verified
PRP without proof (not generated)
2020-07-17Kirill FrolovC-PRP
M2440447/131535212407/116856213767883808913 : D919B6AC4CC14452
PRP: Verified
PRP without proof (not generated)
2020-07-14TJAOIF
Factor: 116856213767883808913 / TF: 66-67
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-28kkmrkkblmbrbkC-PRP
M2440447/131535212407 : D919B6AC4CC14452
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2440447/131535212407 : D919B6AC4CC14452
PRP: Verified
PRP without proof (not generated)