is 2 5527007 - 1
has 1663795 decimal digits
takes 0.873 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC8B106BB8AD54FD7double-checked
PRPFA6A7CAA9E626266PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272173.029268.0556%80000004000000006.72228.2062%179.751470.6770%2.6214%
PrimeNet2620.111262.9032%240005500000.01213.1639%0.123264.0769%1.1737%
GPU722662.672065.1515%340007000000.01612.1554%2.688165.9026%0.7511%
Difference+6+170.3572+2.9040%+7966000+399300000+6.7061+6.0508%+177.0633+4.7743%+1.8703%

Known prime factors (1 factor, 137.1 bits, 0.00248004% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
552700718310977264608653148111852027156385867040742137.07216565002780536240634498791142436029
73 × 421 × 32191 × 34543 × 258197 × 1266527 × 315467869
2021-10-3012665273154678692.863e+104.20987.3506

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-09-08T00:00:00ANONYMOUSv4_computers2000020000---0.005--0.156%
2009-05-24T06:20:00Rob_Deetwopc650001121250---0.028--1.301%
2019-09-09T08:35:45GdSManual testing200000600000012---0.118--2.522%
2021-10-30T05:04:57axnManual testing800000040000000042137.0726.7221.74613.448.206%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:39:10Mark RoseManual testing21262--0.111--
2009-04-28T13:56:00GrunwalderGIMPManual testing262263--0.178--
2014-12-07T21:49:00NesowaManual testing263264--0.355--
2014-12-08T01:11:00monstManual testing264265--0.676--
2015-08-31T09:57:00snme2pm1Manual testing265266--1.352--
2016-07-22T23:21:45Gordon SpenceManual testing266267--2.704--
2018-07-05T15:04:21ramgeisManual testing267268--5.408--
2020-08-24T12:45:02TJAOIManual testing268269--10.82--
2021-08-18T06:14:48SRBaseManual testing269270--21.63--
2021-08-24T16:08:10SRBaseManual testing270271--43.27--
2021-10-11T16:33:06SRBaseManual testing271272--86.53--


ECM factoring results:
Total ECM effort:2.161 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000092.161


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-11-05T00:00:00ANONYMOUSv4_computersC8B106BB8AD54FD70.873
2001-02-04T00:00:00ANONYMOUSv4_computersC8B106BB8AD54FD70.873
2001-02-11T00:00:00ANONYMOUSv4_computersC8B106BB8AD54FD70.873


PRP results:
dateuseridcompidcofactorsres64PRP
2021-11-04T07:12:27ATHec2-PRPCFDC
183109772646086531481118520271563858670407
FA6A7CAA9E626266no


P-1 factor-bounds graph:
B1 = 8000000, B2 = 400000000 (P-1 stage 2)
B1 = 8000000 (P-1 stage 1)
B1 = 200000, B2 = 6000000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 65000, B2 = 1121250 (P-1 stage 2)
B1 = 65000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-11-04T07:12:27+00:00