is 2 2632793 - 1
has 792550 decimal digits
takes 0.203 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L7DD4ADE3A3C87B69double-checked
PRP16C211415F292A__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual271181.586069.0141%2640000264000000.44064.7884%182.026670.4978%1.4837%
PrimeNet2590.029262.7119%110002000000.00242.7011%0.031663.7191%1.0072%
GPU722630.606265.0794%130002000000.00261.5727%0.608865.6286%0.5492%
Difference+8+180.9798+3.9347%+2627000+26200000+0.4380+3.2157%+181.4178+4.8692%+4.8692%

Known prime factors (1 factor, 94.3 bits, 0.00358095% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2632793240334735241625204188215939512994.2794564254296513725237575
32 × 52 × 232 × 2110477 × 18169836499
2021-10-242110477181698364992.894e+9111.09207.07

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-31T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.124%
2009-06-20T20:03:00harleeP4_260030000420000---0.006--0.779%
2011-01-18T00:14:00James Heinrichi7-9201800004275000---0.045--2.304%
2016-12-24T22:38:22Jocelyn Larouchelow 4M172800172800---0.019--0.752%
2016-12-26T22:14:22Jocelyn Larouchelow 4M207360207360---0.023--0.834%
2017-04-22T17:25:13Jocelyn Larouchelow 4M36000036000006---0.060--2.483%
2019-11-01T13:52:03masserManual testing26400002640000012---0.441--4.788%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-26T00:00:00ANONYMOUSv4_computers21259--0.029--
2000-11-15T00:00:00WillametteMathv4_computers21259--0.029--
2016-02-23T16:29:18Mark RoseManual testing259260--0.029--
2009-01-26T22:36:00Sturle Sundeherrick.ifi260261--0.058--
2012-06-08T20:14:00lycornManual testing261264--1.235--
2013-10-22T10:24:00David CampeauManual testing264265--1.419--
2014-03-08T13:55:00Never Odd Or EvenManual testing265266--2.838--
2014-03-08T13:55:00Never Odd Or EvenManual testing266267--5.677--
2014-03-08T13:55:00Never Odd Or EvenManual testing267268--11.35--
2014-03-08T13:55:00Never Odd Or EvenManual testing268269--22.71--
2014-03-08T13:55:00Never Odd Or EvenManual testing269270--45.41--
2015-12-27T16:49:20ramgeisManual testing270271--90.83--


ECM factoring results:

Old Calculation Method

Total ECM effort:13.413 GHz-days
Estimated T-Level:22.321
DigitsB1CurvesCompleteFacMiss
2011000130 / 1001.30027.075%
2550000130 / 2800.46462.806%

New Calculation Method

Total ECM effort:13.413 GHz-days
Estimated T-Level:22.321
DigitsB1CompleteFacMiss
20110004.1941.509%
25500000.37968.454%
302500000.02397.693%
3510000000.00199.893%


ECM Summary

B1B2factorcurvesGHz-days
50000500000012512.90
50000500000050.516


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-31T00:00:00ANONYMOUSv4_computers7DD4ADE3A3C87B690.203
2018-07-10T17:30:45kkmrkkblmbrbkold7DD4ADE3A3C87B690.203


PRP results:
dateuseridcompidcofactorsres64PRP
2021-10-26T18:42:17SRJ2877LTOS
24033473524162520418821593951
16C211415F292A__no


P-1 factor-bounds graph:
B1 = 2640000, B2 = 26400000 (P-1 stage 2)
B1 = 2640000 (P-1 stage 1)
B1 = 360000, B2 = 3600000 (P-1 stage 2)
B1 = 180000, B2 = 4275000 (P-1 stage 2)
B1 = 360000 (P-1 stage 1)
B1 = 207360 (P-1 stage 1)
B1 = 180000 (P-1 stage 1)
B1 = 172800 (P-1 stage 1)
B1 = 30000, B2 = 420000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-10-26T18:42:17+00:00