is 2 102357781 - 1
has 30812763 decimal digits
takes 407.547 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP4918E13045D114E4verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276149.514764.4737%7380001992600010.29623.8418%159.810965.8386%1.3649%
PrimeNet2729.343062.5000%450000220000009.37655.3797%18.719564.5174%2.0174%
GPU72276149.514764.4737%6500002200000010.46823.8514%159.982965.8419%1.3682%
Difference---+88000-2074000-0.1720-0.0095%-0.1720-0.0034%-0.0034%

Known prime factors:
No known factors for M102357781

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-01-31T07:39:22AnthonyRaisWin10Test73800019926000---10.30--3.842%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-02T23:17:001997rj7Manual testing263264--0.019--
2010-08-18T03:21:00Donna NobleATH2-630-temp264265--0.037--
2012-04-22T03:02:00OS1corner3265266--0.073--
2013-08-27T10:30:00RobishManual testing266267--0.146--
2014-05-02T16:09:00Jens PedersenHedgehog267268--0.292--
2014-10-08T02:57:00SMoffatManual testing268269--0.584--
2014-10-10T15:55:00shaugeManual testing269270--1.168--
2014-10-10T15:55:00shaugeManual testing270271--2.336--
2014-12-10T04:53:00shaugeManual testing271272--4.672--
2020-03-28T21:08:45SRBaseManual testing272273--9.345--
2020-03-31T14:05:19SRBaseManual testing273274--18.69--
2020-10-05T22:17:02ktonyGPU72_TF274275--37.38--
2020-10-05T22:45:03RichD0GPU72_TF275276--74.76--


ECM factoring results:
No ECM results for M102357781


Lucas-Lehmer results:
No L-L results for M102357781


PRP results:
dateuseridcompidcofactorsres64PRP
2021-02-02T12:33:01Ben Deloi-06f97aa45896b4c524918E13045D114E4no


P-1 factor-bounds graph:
B1 = 738000, B2 = 19926000 (P-1 stage 2)
B1 = 738000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-02-02T12:33:01+00:00