is 2 631847 - 1
has 190205 decimal digits
takes 0.010 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LCAF150669671FF9Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual269188.948971.0145%51000000728120893500875.070419.6555%1,064.019376.7117%5.6972%
PrimeNet2400.000050.0000%60002200000.000420.6360%0.000460.3180%10.3180%
GPU722440.000054.5455%110004000000.000715.9056%0.000761.7753%7.2298%
Difference+25+188.9489+16.4690%+50989000+728120493500+875.0697+3.7499%+1,064.0186+14.9365%-1.5326%

Known prime factors (1 factor, 133.8 bits, 0.02117394% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6318471878737396025759391822499477196431520105741133.78714867027904110958759181411617024624
24 × 3 × 19 × 71 × 79 × 137 × 10940651 × 18136609 × 106911409741
2022-10-01181366091069114097412.209e+11128.71239.69

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-31T00:00:00Alex Kruppav4_computers200040000---8.96776e-5--0.070%
2001-05-27T00:00:00Alex Kruppav4_computers1000004000000---0.007--2.034%
2002-05-11T00:00:00ANONYMOUSv4_computers163841638400---0.002--0.895%
2002-06-29T00:00:00ANONYMOUSv4_computers327683276800---0.005--1.391%
2002-10-07T00:00:00ANONYMOUSv4_computers655366553600---0.009--2.018%
2003-05-19T00:00:00ANONYMOUSv4_computers13107213107200---0.018--2.771%
2011-07-10T12:45:00Jocelyn LaroucheManual testing361499361499---0.008--1.140%
2011-09-05T00:50:00Jocelyn LaroucheManual testing602499602499---0.013--1.456%
2012-06-19T02:42:00Jocelyn LaroucheManual testing631853631853---0.014--1.488%
2012-08-04T01:16:00Jocelyn LaroucheManual testing12636941263694---0.028--1.998%
2013-10-16T21:52:00David Campeaui5-2500k128500041120000---0.076--4.974%
2015-11-11T17:03:56Sid & AndySpeck631847018955410012---0.359--7.419%
2020-11-24T21:25:56Carlos PinhoHomeComputer4500019320006---0.003--1.372%
2022-10-01T06:30:47masserhwell5100000072812089350041133.787875.10.0191,75019.655%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-08-29T13:02:07masserManual testing510000021930000027--0.423


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-01-12T00:00:00ANONYMOUSv4_computers253254--0.002--
2022-03-07T09:01:53LordJuliusManual testing254255--0.004--
2001-04-15T00:00:00ANONYMOUSv4_computers21256--0.015--
2001-10-25T00:00:00ANONYMOUSv4_computers21257--0.030--
2003-11-08T00:00:00ANONYMOUSv4_computers21258--0.061--
2008-10-12T12:02:00Sturle Sundebuxtehude.ifi258259--0.061--
2008-10-12T12:44:00Sturle Sundebuxtehude.ifi259260--0.122--
2011-01-07T18:12:00Sid & AndyToy_Soldier260261--0.243--
2015-06-06T19:35:00lycornManual testing261262--0.486--
2015-10-11T18:21:45Gordon SpenceManual testing262263--1.554--
2015-10-11T18:21:45Gordon SpenceManual testing263264--3.107--
2017-06-23T08:32:07Smok_bmvManual testing264265--5.913--
2017-07-18T04:39:30Smok_bmvManual testing265266--11.83--
2018-12-12T04:34:18Smok_bmvManual testing266267--23.65--
2018-12-12T04:34:18Smok_bmvManual testing267268--47.31--
2018-12-13T04:41:03Smok_bmvManual testing268269--94.61--


ECM factoring results:
Total ECM effort:19.688 GHz-days
Estimated T-Level:26.630
DigitsB1CompleteFacMiss
201100026.4120.000%
25500003.3933.362%
302500000.32672.178%
3510000000.02597.515%
4030000000.00299.838%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002934.984
2500002500000014512.33
2500002800000070.620
2500003850000070.708
25000012899251051.043


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11T15:31:00MadPooManual testingCAF150669671FF9D0.010


PRP results:
dateuseridcompidcofactorsres64PRP
2022-10-01T14:21:04masserhwell
18787373960257593918224994771964315201057
0B6E2D95163D1E0Ano


P-1 factor-bounds graph:
B1 = 51000000, B2 = 728120893500 (P-1 stage 2)
B1 = 51000000 (P-1 stage 1)
B1 = 6318470, B2 = 189554100 (P-1 stage 2)
B1 = 6318470 (P-1 stage 1)
B1 = 1285000, B2 = 41120000 (P-1 stage 2)
B1 = 1285000 (P-1 stage 1)
B1 = 1263694 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 631853 (P-1 stage 1)
B1 = 602499 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 361499 (P-1 stage 1)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 45000, B2 = 1932000 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 45000 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 40000 (P-1 stage 2)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-10-01T14:21:04+00:00