is 2 5147069 - 1
has 1549423 decimal digits
takes 0.713 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L31F34D1CC444A37Adouble-checked
PRP0227E080FF03BFF3PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27192.883667.6056%30500096837500.16403.3138%93.047668.6791%1.0735%
PrimeNet2610.059762.2951%220005000000.00973.4147%0.069363.5826%1.2875%
GPU722651.417464.6154%360008000000.01562.5420%1.433065.5149%0.8995%
Difference+6+91.4662+2.9902%+269000+8883750+0.1484+0.7718%+91.6146+3.1643%+0.1740%

Known prime factors (1 factor, 135.8 bits, 0.00263872% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
51470697671332006960692534913947542973379118991941135.8177452136358537929581781347348338811
32 × 23 × 181 × 467 × 929 × 1409 × 13499 × 16087 × 669091 × 2239373
2022-07-2166909122393733.253e+100.15170.2737

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-09-15T00:00:00ANONYMOUSv4_computers2000020000---0.004--0.184%
2009-09-24T01:31:00harleeP4_2600600001065000---0.023--1.416%
2019-05-09T02:37:02harleeP4_2600305000968375012---0.164--3.314%
2022-07-21T18:37:44Sid & AndyMagic_8_Ball4000000400000041135.8170.8041.4271.6083.235%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-02-12T00:00:00ANONYMOUSv4_computers21261--0.060--
2008-10-12T15:51:00Sturle Sunderumblebuffin.ifi261262--0.060--
2009-11-14T14:43:00S485122USB-W262263--0.191--
2014-12-16T14:38:00VictordeHollanderManual testing263264--0.381--
2014-12-16T14:38:00VictordeHollanderManual testing264265--0.726--
2015-08-07T07:59:00snme2pm1Manual testing265266--1.452--
2016-05-29T01:05:44Gordon SpenceManual testing266267--2.904--
2018-06-20T10:29:30ramgeisManual testing267268--5.807--
2020-10-12T08:50:26TJAOIManual testing268269--11.61--
2022-01-15T15:46:24Gordon SpenceManual testing269270--23.23--
2022-01-20T19:55:43mikrManual testing270271--46.46--


ECM factoring results:
Total ECM effort:1.897 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.897


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-09-13T00:00:00ANONYMOUSv4_computers31F34D1CC444A37A0.713
2000-11-15T00:00:00ANONYMOUSv4_computers31F34D1CC444A37A0.713


PRP results:
dateuseridcompidcofactorsres64PRP
2022-07-27T20:21:40Poaooffice-CN2
76713320069606925349139475429733791189919
0227E080FF03BFF3no


P-1 factor-bounds graph:
B1 = 4000000 (P-1 stage 1)
B1 = 305000, B2 = 9683750 (P-1 stage 2)
B1 = 305000 (P-1 stage 1)
B1 = 60000, B2 = 1065000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
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107
TF factor-bounds graph:
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Last modified: 2022-07-27T20:21:40+00:00