is 2 15130903 - 1
has 4554856 decimal digits
takes 7.589 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L1F4B8FA3342F25EFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27263.204066.6667%30000060000000.44403.1077%63.648067.7026%1.0359%
PrimeNet2650.482263.0769%6500020000000.12394.1482%0.606164.6085%1.5316%
GPU722697.890365.2174%10000026000000.17182.9971%8.062066.2599%1.0425%
Difference+3+55.3137+1.4493%+200000+3400000+0.2722+0.1106%+55.5860+1.4427%-0.0066%

Known prime factors (1 factor, 73.8 bits, 0.00048781% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15130903165587975506529713648332373.810547184710345872
24 × 3 × 467 × 1303 × 18734039
2022-10-08130318734039203.920.74321.3863

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-07-06T00:00:00ANONYMOUSv4_computers225000225000---0.164--1.032%
2016-09-07T01:48:16ThaManual testing300000600000012---0.444--3.108%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-10-08T04:28:19ATHec2-P_110000002900000027P-12373.8102.094


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-12-31T00:00:00Net_Forcev4_computers21257--0.001--
2000-12-31T00:00:00Net_Forcev4_computers21258--0.003--
2001-01-21T00:00:00ANONYMOUSv4_computers21265--0.482--
2013-09-18T18:18:00David CampeauManual testing265266--0.494--
2014-05-14T07:09:00NesowaManual testing266267--0.988--
2017-01-15T02:45:17mikrManual testing267268--1.975--
2017-10-11T09:55:18ramgeisManual testing268269--3.951--
2021-06-28T23:21:04lycornManual testing269270--7.902--
2021-09-02T17:56:29SRBaseManual testing270271--15.80--
2021-10-10T11:55:12-Anonymous-Manual testing271272--31.61--


ECM factoring results:
Total ECM effort:0.763 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.763


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-08-17T00:00:00ANONYMOUSv4_computers1F4B8FA3342F25EF7.589
2005-10-18T00:00:00monstv4_computers1F4B8FA3342F25EF7.589


PRP results:
No PRP results for M15130903


P-1 factor-bounds graph:
B1 = 1000000, B2 = 29000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 300000, B2 = 6000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 225000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-10-08T04:28:19+00:00