is 2 2629969 - 1
has 791700 decimal digits
takes 0.203 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4C5C3DB3F470DD75double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27090.856868.5714%2000000600000000.57795.9504%91.434770.4415%1.8701%
PrimeNet2590.029262.7119%110002000000.00242.7006%0.031663.7189%1.0070%
GPU722630.606965.0794%130002000000.00261.5724%0.609565.6285%0.5491%
Difference+7+90.2500+3.4921%+1987000+59800000+0.5753+4.3780%+90.8253+4.8131%+1.3210%

Known prime factors (1 factor, 69.9 bits, 0.00265962% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
262996911381647075635997014732269.947216383673640944
24 × 3 × 4507993200853
2014-04-0316450799320085385.18927,50651,374

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-07-22T00:00:00Richard B. Woodsv4_computers30000240000---0.005--0.754%
2002-08-10T00:00:00Richard B. Woodsv4_computers9500095000---0.011--0.603%
2002-08-10T00:00:00Richard B. Woodsv4_computers195000195000---0.022--0.921%
2002-08-10T00:00:00Richard B. Woodsv4_computers295000295000---0.033--1.146%
2019-07-04T12:43:09alpertronManual testing20000006000000012---0.578--5.950%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-26T00:00:00ANONYMOUSv4_computers21259--0.029--
2006-12-18T00:00:00Richard B. Woodsv4_computers21262--0.234--
2007-03-04T00:00:00Richard B. Woodsv4_computers21263--0.607--
2007-09-13T00:00:00Richard B. Woodsv4_computers21264--1.353--
2013-10-19T21:12:00David CampeauManual testing264265--1.421--
2014-03-08T13:53:00Never Odd Or EvenManual testing265266--2.841--
2014-03-08T13:53:00Never Odd Or EvenManual testing266267--5.683--
2014-03-08T13:53:00Never Odd Or EvenManual testing267268--11.37--
2014-03-08T13:53:00Never Odd Or EvenManual testing268269--22.73--
2014-03-08T13:53:00Never Odd Or EvenManual testing269270--45.46--
2014-04-03T13:28:00Never Odd Or EvenManual testing26927069.9472239.790.41380.84


ECM factoring results:
Total ECM effort:0.928 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000090.928


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-04-11T00:00:00ANONYMOUSv4_computers4C5C3DB3F470DD750.203
1999-04-02T00:00:00ANONYMOUSv4_computers4C5C3DB3F470DD750.203


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-17T17:52:43Oliver KruseGTX-2
1138164707563599701473
18ABEB93ABB006__no
2017-12-02T19:18:03storm55107700_Kaby_Lake
1138164707563599701473
18ABEB93ABB006__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 295000 (P-1 stage 1)
B1 = 195000 (P-1 stage 1)
B1 = 95000 (P-1 stage 1)
B1 = 30000, B2 = 240000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-07-04T12:43:09+00:00