is 2 571199 - 1
has 171949 decimal digits
takes 0.008 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD4FBF90DBFF4D769double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual268104.350570.5882%14731251009233225011.656711.1282%116.007173.8612%
Target2440.000054.5455%100003400000.000615.2003%0.000661.4547%
Difference+24+104.3505+16.0428%+1463125+10091992250+11.6561-4.0721%+116.0065+12.4065%

Known prime factors (1 factor, 111.0 bits, 0.01942472% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
571199251432535996363068539189921697880134110.9542200918909139923814110230600
23 × 3 × 52 × 983 × 423097 × 12483091 × 706540711
2022-12-01124830917065407113.021e+111.06361.5203

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-22ANONYMOUSv4_computers2000200000---0.000--0.148%
2002-01-22ANONYMOUSv4_computers4096409600---0.001--0.329%
2002-03-03ANONYMOUSv4_computers8192819200---0.001--0.613%
2002-04-28ANONYMOUSv4_computers163841638400---0.002--1.023%
2002-05-11ANONYMOUSv4_computers500001000000---0.002--1.350%
2002-06-29ANONYMOUSv4_computers327683276800---0.004--1.569%
2002-09-14ANONYMOUSv4_computers655366553600---0.009--2.251%
2003-05-19ANONYMOUSv4_computers13107213107200---0.018--3.060%
2011-07-01Jocelyn LaroucheManual testing412031412031---0.009--1.355%
2011-08-24Jocelyn LaroucheManual testing686719686719---0.015--1.710%
2012-03-05Jocelyn LaroucheManual testing858399858399---0.018--1.880%
2013-09-28David Campeaui5-2500k104500032395000---0.058--5.045%
2015-04-23Sid & AndySpeck5711990171359700---0.312--7.774%
2019-04-16alexlaptop1000000040000000012---0.661--9.150%
2022-11-22Jocelyn LaroucheManual testing147312510092332250---11.66--11.128%
2022-12-13harleei5-5250U_160017500005417291880---6.276--10.674%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-11-28masserManual testing400000016400000014971--0.309
2022-11-29masserManual testing800000038400000065--0.682
2022-12-01masserManual testing1600000089600000027P-134110.9541.508


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-04-05ANONYMOUSv4_computers21254--0.004--
2022-03-07LordJuliusManual testing254255--0.004--
2001-04-08ANONYMOUSv4_computers21256--0.017--
2002-01-15ANONYMOUSv4_computers21257--0.034--
2003-11-28ANONYMOUSv4_computers21258--0.067--
2016-02-23Mark RoseManual testing258260--0.202--
2016-02-23Mark RoseManual testing260261--0.269--
2015-07-12NRManual testing261262--0.538--
2015-09-15Gordon SpenceManual testing262263--1.719--
2015-09-15Gordon SpenceManual testing263264--3.437--
2017-08-22ConductorManual testing264265--6.541--
2018-06-04chuenkitManual testing265266--13.08--
2020-03-11YxinityManual testing266267--26.17--
2022-04-10Gordon SpenceManual testing267268--52.33--


ECM factoring results:
Total ECM effort:24.433 GHz-days
Estimated T-Level:27.135
DigitsB1CompleteFacMiss
201100036.5150.000%
25500004.5601.046%
302500000.42765.251%
3510000000.03296.824%
4030000000.00299.796%


ECM Summary

B1B2factorcurvesGHz-days
5000050000004587.420
2500002500000016613.45
2500002825000070.593
2500002850000070.595
2500002900000070.598
25000035000000121.107
2500003875000070.675


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11MadPooManual testingD4FBF90DBFF4D7690.008


PRP results:
dateuseridcompidcofactorsres64PRP
2022-12-01masserManual testing
2514325359963630685391899216978801
F3C5528F0B953683no


P-1 factor-bounds graph:
B1 = 1473125, B2 = 10092332250 (P-1 stage 2)
B1 = 1750000, B2 = 5417291880 (P-1 stage 2)
B1 = 16000000, B2 = 896000000 (P-1 stage 2)
B1 = 10000000, B2 = 400000000 (P-1 stage 2)
B1 = 16000000 (P-1 stage 1)
B1 = 5711990, B2 = 171359700 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 5711990 (P-1 stage 1)
B1 = 1045000, B2 = 32395000 (P-1 stage 2)
B1 = 1750000 (P-1 stage 1)
B1 = 1473125 (P-1 stage 1)
B1 = 1045000 (P-1 stage 1)
B1 = 858399 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 686719 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 412031 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
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: 2022-12-13T13:29:12+00:00