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

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MnStatusDetails
219959Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
439919618.7old
1759673720.72008-07-21 09:14:13
19066600588850707671960.72014-07-28 15:25:50
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000179 / 1566
Estimated T-Level: 30.6
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 KruseE91128250FF7BA8B3013
Verified2017-10-12kkmrkkblmbrbkE91128250FF7BA8B37490113
Verified2020-04-17Oliver Kruse930E164CC08388C033441553
Verified (Factored)2022-05-12Jorge Coveiro930E164CC08388C013274253
Verified2023-08-03USAFSS930E164CC08388C0314858253
History
DateUserTypeResult
2023-08-04theojkCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M219959/439919/1759673/1906660058885070767 : 930E164CC08388C0
PRP proof power = 5
PRP: Verified
Proof certified good
2022-05-12Jorge CoveiroC-PRP
M219959/439919 : 930E164CC08388C0
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2022-03-05Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-06-05Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M219959/439919/1759673/1906660058885070767 : 930E164CC08388C0
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M219959/439919/1759673/1906660058885070767 : E91128250FF7BA8B
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M219959/439919/1759673/1906660058885070767 : E91128250FF7BA8B
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M219959/439919/1759673/1906660058885070767 : E91128250FF7BA8B
PRP without proof (not generated)
2014-07-28TJAOIF-ECM
Factor: 1906660058885070767
2008-07-21J FeitsmaF
Factor: 1759673