is 2 1139503 - 1
has 343025 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L64941364F511B528double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26726.076268.6567%1220000353800000.13246.1641%26.208670.5888%1.9320%
PrimeNet2560.008462.5000%5000700000.00042.1588%0.008863.3095%0.8095%
GPU722600.134865.0000%5000260000.00030.7691%0.135165.2692%0.2692%
Difference+7+25.9414+3.6567%+1215000+35354000+0.1322+5.3950%+26.0736+5.3196%+5.3196%

Known prime factors (1 factor, 76.5 bits, 0.00671289% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11395031063786950827757064366872476.49446677672232006281
3 × 15559224077335427
2016-04-2031555922407733542713,66636,431,49168,043,880

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-07T00:00:00Jocelyn Larouchev4_computers10000102500---0.001--0.507%
2013-10-01T03:55:00David Campeaui5-2500k122000035380000---0.132--6.164%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-07-12T00:00:00ANONYMOUSv4_computers21256--0.008--
2001-11-17T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-04-27T00:00:00ANONYMOUSv4_computers21258--0.034--
2016-02-23T16:28:22Mark RoseManual testing258260--0.101--
2009-02-15T07:53:00Sturle Sundeklughardt.ifi260261--0.135--
2012-08-17T23:07:00AxelssonManual testing261262--0.270--
2012-10-21T10:08:00dbaughManual testing262263--0.861--
2014-12-26T00:16:00Matthias WurtingerManual testing263264--1.723--
2015-01-14T01:47:00lycornManual testing264265--3.279--
2015-07-10T21:15:00omylistManual testing265266--6.558--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.722 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.722 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002799.87
50000500000020.071
25000025000000447.782


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-07-26T00:00:00ANONYMOUSv4_computers64941364F511B5280.034


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T06:03:01Oliver KruseGTX-0
106378695082775706436687
976B722EB55320__no
2017-10-17T02:12:11Oliver KruseThreadripper
106378695082775706436687
976B722EB55320__no
2018-01-05T23:45:49ATHec2-1xf
106378695082775706436687
976B722EB55320__no


P-1 factor-bounds graph:
B1 = 1220000, B2 = 35380000 (P-1 stage 2)
B1 = 1220000 (P-1 stage 1)
B1 = 10000, B2 = 102500 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-10-23T07:50:02+00:00