is 2 14017981 - 1
has 4219833 decimal digits
takes 6.220 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L88DAA7870281CEB3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27268.221966.6667%15000015375000.14511.9773%68.367168.6440%5.5671%
PrimeNet2650.520563.0769%6000019000000.10314.0027%0.623567.0796%4.0027%
GPU722698.516765.2174%9000024000000.13892.8536%8.655668.0710%2.8536%
Difference+3+59.7052+1.4493%+60000-862500+0.0063-0.8763%+59.7115+0.5730%+0.5730%

Known prime factors (1 factor, 88.9 bits, 0.00063437% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
140179815880033754325130220238538732788.92620973183493133320056
23 × 32 × 291294215182407223
92912942151824072232020-09-028,339,6531.021e+101.907e+10

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-22T00:00:00ANONYMOUSv4_computers1500001537500---0.145--1.977%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-24T00:00:00ANONYMOUSv4_computers?265--0.267--
2014-07-22T14:09:00NesowaManual testing265266--0.533--
2015-08-19T08:18:00ThaManual testing266267--1.066--
2018-03-13T09:55:26ramgeisManual testing267268--2.132--
2018-03-13T09:55:26ramgeisManual testing268269--4.265--
2020-04-08T20:02:47masserManual testing269270--8.529--
2020-06-16T13:59:47masserManual testing270271--17.06--
2020-09-23T21:45:10masserManual testing271272--34.12--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000074.723


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-05-11T00:00:00vidmarv4_computers88DAA7870281CEB36.220
2005-04-02T00:00:00Team Prime Ribv4_computers88DAA7870281CEB36.220


PRP results:
Exponent "14017981" not found


P-1 factor-bounds graph:
B1 = 150000, B2 = 1537500 (stage 2)
B1 = 150000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2020-09-23T21:45:10+00:00