is 2 14797831 - 1
has 4454592 decimal digits
takes 7.087 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L508DB7BA28820CE3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2698.067965.2174%719000504950002.38246.8738%10.450372.0911%9.0142%
PrimeNet2650.493063.0769%6500020000000.11834.1348%0.611467.2117%4.1348%
GPU722698.067965.2174%10000026000000.16402.9873%8.231968.2047%2.9873%
Difference---+619000+47895000+2.2184+3.8864%+2.2184+3.8864%+3.8864%

Known prime factors (1 factor, 128.6 bits, 0.00086937% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1479783153324029656707819085211896710729853372739128.64818017515423952273507249777589273
3 × 7 × 193 × 30181 × 36137 × 85691 × 550213 × 2432557
2021-05-0355021324325571.051e+100.45330.7776

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-09-22T00:00:00ANONYMOUSv4_computers225000225000---0.156--1.512%
2006-11-28T00:00:00dswansonv4_computers850001423750---0.110--2.519%
2021-05-03T01:35:16Architects Cubedgpu72ng7190005049500039128.6482.38214.174.7656.874%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-02-16T00:00:00ANONYMOUSv4_computers?253--8.10877e-5--
2000-08-31T00:00:00Net_Forcev4_computers?256--0.001--
2000-09-08T00:00:00Net_Forcev4_computers?257--0.001--
2000-09-08T00:00:00Net_Forcev4_computers?258--0.003--
2000-10-07T00:00:00Net_Forcev4_computers?259--0.003--
2000-12-14T00:00:00ANONYMOUSv4_computers?264--0.133--
2000-12-31T00:00:00ANONYMOUSv4_computers?265--0.252--
2016-03-16T02:27:52Mark RoseManual testing265266--0.505--
2015-10-14T13:26:21NesowaManual testing266267--1.010--
2018-03-15T12:49:49ramgeisManual testing267268--2.020--
2018-03-15T12:49:49ramgeisManual testing268269--4.040--


ECM factoring results:
Total ECM effort:0.728 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

ECM Summary

B1B2factorcurvesGHz-days
50000500000010.728


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-02-16T00:00:00ANONYMOUSv4_computers508DB7BA28820CE37.087
2006-11-28T00:00:00dswansonv4_computers508DB7BA28820CE37.087


PRP results:
Exponent "14797831" not found


P-1 factor-bounds graph:
B1 = 719000, B2 = 50495000 (stage 2)
B1 = 719000 (stage 1)
B1 = 225000 (stage 1)
B1 = 85000, B2 = 1423750 (stage 2)
B1 = 85000 (stage 1)
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106
107
108
TF factor-bounds graph:
269
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267
266
265
264
259
258
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256
253
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2100
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2120
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Last modified: 2021-05-03T01:35:16+00:00