is 2 107157481 - 1
has 32257617 decimal digits
takes 439.495 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-
PRP7E818E1DCC8836__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276142.817864.4737%8820004822300020.58424.6400%163.402066.1221%1.6484%
PrimeNet2728.924662.5000%450000220000009.65865.4090%18.583164.5284%2.0284%
GPU72276142.817864.4737%7000002400000011.71233.9755%154.530165.8860%1.4123%
Difference---+182000+24223000+8.8719+0.6645%+8.8719+0.2361%+0.2361%

Known prime factors:
No known factors for M107157481

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-11-01T09:14:37ky0urakuvms288200048223000---20.58--4.640%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-24T10:31:00sasaki3MATE_J2263264--0.018--
2010-09-07T12:24:00c10ck3raleman264265--0.035--
2012-05-19T02:11:00omiXorpLLB03-z800-17265266--0.070--
2013-09-21T23:18:00ITSLJCA_-_ServerStation266267--0.139--
2013-09-23T18:17:00timc995dl580_g5b267268--0.279--
2013-09-24T16:26:00ANONYMOUSManual testing268269--0.558--
2014-06-14T06:52:00Andreas_TruetschManual testing269270--1.116--
2014-06-29T15:00:00PascalBieriManual testing270271--2.232--
2015-01-19T03:08:00SMoffatManual testing271272--4.463--
2020-03-28T07:57:18SRBaseManual testing272273--8.926--
2020-06-16T14:55:11XZTManual testing273274--17.85--
2021-04-10T18:02:58TheJudgerManual testing274275--35.70--
2021-04-10T18:02:58TheJudgerManual testing275276--71.41--


ECM factoring results:
No ECM results for M107157481


Lucas-Lehmer results:
No L-L results for M107157481


PRP results:
dateuseridcompidcofactorsres64PRP
2021-11-02T22:58:00Ben Deloi-07730c841ba4056577E818E1DCC8836__no


P-1 factor-bounds graph:
B1 = 882000, B2 = 48223000 (P-1 stage 2)
B1 = 882000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-11-02T22:58:00+00:00