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

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MnStatusDetails
248063Composite, with 6 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
496127618.9old
946608409929.82008-07-21 09:14:55
22228720867327691651.02009-01-14 12:38:51
10740140955222060163272269.92015-01-16 11:43:54
14337681208992836653970624392890.22021-11-04 00:05:40
2095027671751473221219533025593097.42021-08-05 19:37:55
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000163 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseEEAD2E6AF094DFC44013
Verified (Factored)2017-09-22Oliver KruseEEAD2E6AF094DFC44013
Verified (Factored)2017-11-06kkmrkkblmbrbkEEAD2E6AF094DFC4410644513
Verified (Factored)2020-04-17Oliver KruseEA7A98670DADD10245511853
Verified (Factored)2021-08-05Oliver KruseEA7A98670DADD102515948353
Verified2021-11-04mnd9EA7A98670DADD102617266153
Verified (Factored)2022-05-12Jorge CoveiroEA7A98670DADD102123987653
P-1 factors
DateFactorB1B2
2021-08-05209502767175147322121953302559300000003000000000
History
DateUserTypeResult
2022-05-12Jorge CoveiroC-PRP
M248063/496127 : EA7A98670DADD102
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2022-04-16Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-11-04curtiscCERT
PRP Certification
Proof certified good
2021-11-04mnd9C-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327/1433768120899283665397062439/209502767175147322121953302559 : EA7A98670DADD102
PRP proof power = 5
PRP: Verified
Proof certified good
2021-11-04LuminescenceF-ECM
Factor: 1433768120899283665397062439 / (ECM curve 1, B1=250000, B2=34750000, Sigma=2670129394528315)
2021-08-05x-s-y-CERT
PRP Certification
Proof certified good
2021-08-05Oliver KruseC-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327/209502767175147322121953302559 : EA7A98670DADD102
PRP proof power = 5
PRP: Verified (Factored)
Proof certified good
2021-08-05Oliver KruseF-PM1
Factor: 209502767175147322121953302559 / (P-1, B1=30000000, B2=3000000000, E=24)
2020-04-17Oliver KruseC-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327 : EA7A98670DADD102
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327 : EEAD2E6AF094DFC4
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327 : EEAD2E6AF094DFC4
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M248063/496127/946608409/2222872086732769/1074014095522206016327 : EEAD2E6AF094DFC4
PRP without proof (not generated)
2015-01-16TJAOIF-ECM
Factor: 1074014095522206016327 / (ECM curve 13, B1=50000, B2=5000000)
2009-01-14Matthias WurtingerF-ECM
Factor: 2222872086732769
2008-07-21J FeitsmaF
Factor: 946608409