is 2 865357 - 1
has 260499 decimal digits
takes 0.021 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L1CC691CC98D99E07double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26868.878970.5882%1500000011010818882702,109.896320.1638%2,178.775376.5188%5.9305%
PrimeNet2400.000050.0000%80003400000.000923.0547%0.000961.5274%11.5274%
GPU722440.000054.5455%140005500000.001517.6033%0.001562.5470%8.0015%
Difference+24+68.8789+16.0428%+14986000+1101081338270+2,109.8948+2.5604%+2,178.7738+13.9718%-2.0710%

Known prime factors (1 factor, 130.6 bits, 0.01509403% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
865357208790822921662255892691946948890929733740130.6171206385473981618314133311147589324
22 × 34 × 19 × 443 × 192251 × 1166479 × 1724113 × 1144122439
2022-10-17172411311441224392.017e+112.24924.0938

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-08T00:00:00ANONYMOUSv4_computers2000200000---0.000--0.167%
2002-02-17T00:00:00ANONYMOUSv4_computers4096409600---0.001--0.366%
2002-04-14T00:00:00ANONYMOUSv4_computers8192819200---0.002--0.674%
2002-05-25T00:00:00ANONYMOUSv4_computers163841638400---0.004--1.112%
2002-06-29T00:00:00ANONYMOUSv4_computers327683276800---0.007--1.690%
2002-12-16T00:00:00ANONYMOUSv4_computers655376553700---0.015--2.406%
2003-08-25T00:00:00ANONYMOUSv4_computers13107213107200---0.029--3.249%
2011-02-20T14:43:00Jocelyn LaroucheManual testing200000200000---0.007--1.006%
2011-06-24T22:13:00Jocelyn LaroucheManual testing400000400000---0.014--1.427%
2011-08-31T00:06:00Jocelyn LaroucheManual testing400739400739---0.014--1.428%
2012-01-22T03:55:00Jocelyn LaroucheManual testing801479801479---0.028--1.941%
2012-03-29T23:12:00Jocelyn LaroucheManual testing12022191202219---0.042--2.284%
2012-08-29T21:06:00Jocelyn LaroucheManual testing17307141730714---0.061--2.619%
2012-10-25T06:30:00Jocelyn LaroucheManual testing19497841949784---0.069--2.734%
2013-11-04T12:57:00David Campeaui5-2500k202500072900000---0.207--6.499%
2015-11-28T06:15:00Sid & AndyRocky865357025960710012---0.785--8.844%
2022-10-17T10:56:46lycorncolab_ES15000000110108188827040130.6172,1100.0424,22020.164%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-24T00:00:00ANONYMOUSv4_computers21255--0.006--
2000-12-31T00:00:00ANONYMOUSv4_computers21256--0.011--
2001-12-01T00:00:00ANONYMOUSv4_computers21257--0.022--
2003-09-09T00:00:00ANONYMOUSv4_computers21258--0.044--
2022-03-07T09:34:16LordJuliusManual testing258259--0.044--
2004-05-11T00:00:00Sturle Sundev4_computers21260--0.177--
2010-05-23T16:40:00Architects Cubedm1_tt260261--0.177--
2015-02-06T11:10:00TJAOIManual testing261262--0.355--
2015-10-07T08:57:20Gordon SpenceManual testing262263--1.134--
2015-10-07T08:57:20Gordon SpenceManual testing263264--2.269--
2016-02-13T10:46:03lycornManual testing264265--4.318--
2018-05-18T04:21:48BloodERazorManual testing265266--8.635--
2019-03-25T07:12:20lycornManual testing266267--17.27--
2022-02-22T21:30:31Gordon SpenceManual testing267268--34.54--


ECM factoring results:
Total ECM effort:14.822 GHz-days
Estimated T-Level:25.703
DigitsB1CompleteFacMiss
201100015.3150.000%
25500001.70118.256%
302500000.14186.883%
3510000000.01099.052%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002807.830
25000025000000506.991


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-01-28T00:00:00ANONYMOUSv4_computers1CC691CC98D99E070.021
2015-04-11T21:20:00MadPooManual testing1CC691CC98D99E070.021


PRP results:
dateuseridcompidcofactorsres64PRP
2022-10-17T12:30:32Kevin_9611PI
2087908229216622558926919469488909297337
7AEA53C1DE8CFBBFno


P-1 factor-bounds graph:
B1 = 15000000, B2 = 1101081888270 (P-1 stage 2)
B1 = 8653570, B2 = 259607100 (P-1 stage 2)
B1 = 15000000 (P-1 stage 1)
B1 = 8653570 (P-1 stage 1)
B1 = 2025000, B2 = 72900000 (P-1 stage 2)
B1 = 2025000 (P-1 stage 1)
B1 = 1949784 (P-1 stage 1)
B1 = 1730714 (P-1 stage 1)
B1 = 1202219 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 801479 (P-1 stage 1)
B1 = 65537, B2 = 6553700 (P-1 stage 2)
B1 = 400739 (P-1 stage 1)
B1 = 400000 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65537 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-10-17T12:30:32+00:00