is 2 627919 - 1
has 189023 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-LC7612823491E2414double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual269190.130971.0145%52000000739960221000889.302719.6900%1,079.433676.7217%5.7072%
PrimeNet2400.000050.0000%60002200000.000420.6216%0.000460.3108%10.3108%
GPU722440.000054.5455%110004000000.000715.8940%0.000761.7700%7.2246%
Difference+25+190.1309+16.4690%+51989000+739959821000+889.3020+3.7960%+1,079.4329+14.9517%-1.5173%

Known prime factors (1 factor, 134.1 bits, 0.02135791% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6279192350987327364737117446222606617528679312141134.11018720466551933745574239851052584240
24 × 3 × 5 × 7853 × 23629 × 3837079 × 11645923 × 9406971569
2022-09-281164592394069715692.310e+1111.53421.090

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-31T00:00:00Alex Kruppav4_computers200040000---8.96776e-5--0.070%
2001-04-21T00:00:00Alex Kruppav4_computers1000004000000---0.007--2.032%
2002-05-11T00:00:00ANONYMOUSv4_computers163841638400---0.002--0.894%
2002-06-29T00:00:00ANONYMOUSv4_computers327683276800---0.005--1.389%
2002-10-07T00:00:00ANONYMOUSv4_computers655366553600---0.009--2.016%
2003-05-19T00:00:00ANONYMOUSv4_computers13107213107200---0.018--2.769%
2011-07-10T12:45:00Jocelyn LaroucheManual testing364434364434---0.008--1.143%
2011-09-05T00:50:00Jocelyn LaroucheManual testing607390607390---0.013--1.460%
2012-06-19T02:42:00Jocelyn LaroucheManual testing627943627943---0.014--1.482%
2012-08-01T01:16:00Jocelyn LaroucheManual testing12558381255838---0.028--1.991%
2013-10-16T11:15:00David Campeaui5-2500k128000040960000---0.076--4.964%
2015-11-07T13:30:30Sid & AndySpeck627919018837570012---0.357--7.404%
2020-11-24T21:19:00Carlos PinhoHomeComputer4500019540006---0.003--1.375%
2022-09-14T19:18:41masserManual testing5200000052000000---1.146--6.175%
2022-09-28T08:21:26masserhwell5200000073996022100041134.110889.30.0191,77919.690%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-08-28T14:21:46masserManual testing520000022360000027--0.422


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-30T00:00:00ANONYMOUSv4_computers253254--0.002--
2022-03-07T09:01:48LordJuliusManual testing254255--0.004--
2001-04-15T00:00:00ANONYMOUSv4_computers21256--0.015--
2001-10-25T00:00:00ANONYMOUSv4_computers21257--0.031--
2003-02-09T00:00:00ANONYMOUSv4_computers21258--0.061--
2003-02-24T00:00:00ANONYMOUSv4_computers21259--0.122--
2008-10-12T03:49:00Sturle Sundebakeng.ifi259260--0.122--
2010-08-14T10:07:00Architects Cubedm1_fw260261--0.245--
2015-06-09T07:20:00lycornManual testing261262--0.489--
2015-10-09T12:38:57Gordon SpenceManual testing262263--1.563--
2015-10-09T12:38:57Gordon SpenceManual testing263264--3.127--
2017-06-22T08:31:16Smok_bmvManual testing264265--5.950--
2017-07-17T04:38:59Smok_bmvManual testing265266--11.90--
2018-12-03T04:40:33Smok_bmvManual testing266267--23.80--
2018-12-03T04:40:33Smok_bmvManual testing267268--47.60--
2018-12-03T04:40:33Smok_bmvManual testing268269--95.21--


ECM factoring results:
Total ECM effort:20.330 GHz-days
Estimated T-Level:26.690
DigitsB1CompleteFacMiss
201100027.0240.000%
25500003.4963.032%
302500000.33871.316%
3510000000.02697.414%
4030000000.00299.831%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002904.931
2500002500000014612.41
2500002750000070.616
2500002800000070.620
2500003875000070.709
25000012899251051.042


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11T15:31:00MadPooManual testingC7612823491E24140.010


PRP results:
dateuseridcompidcofactorsres64PRP
2022-09-28T10:38:03masserhwell
23509873273647371174462226066175286793121
98DC8BEC742765__no


P-1 factor-bounds graph:
B1 = 52000000, B2 = 739960221000 (P-1 stage 2)
B1 = 52000000 (P-1 stage 1)
B1 = 6279190, B2 = 188375700 (P-1 stage 2)
B1 = 6279190 (P-1 stage 1)
B1 = 1280000, B2 = 40960000 (P-1 stage 2)
B1 = 1280000 (P-1 stage 1)
B1 = 1255838 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 627943 (P-1 stage 1)
B1 = 607390 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 364434 (P-1 stage 1)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 45000, B2 = 1954000 (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: 2022-09-28T10:38:03+00:00