is 2 3573391 - 1
has 1075698 decimal digits
takes 0.375 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LACC6D331A8D0C32Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual271133.788469.0141 %6000000773112694265.010611.7783 %198.799072.6637 %
Target2640.996165.6250 %2000020000000.01951.9778 %1.015566.3049 %
Difference+7+132.7923+3.3891 %+5980000+7729126942+64.9911+9.8005%+197.7835+6.3588 %

Known prime factors (1 factor, 80.2 bits, 0.00224575% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
357339114369973128779828857397372580.249201069140331688148
22 × 13 × 3866714237147849
2022-12-1113386671423714784968,52532,082,88059,921,885

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-09Carsten Kossendeymother20000245000--0.0051.725%
2011-12-23Squeeky_SquirrelP4_26008500015725006--0.0253.742%
2016-04-06USAFSSP4_260017500046812506--0.0645.223%
2017-05-13JossManual testing35000035000006--0.0795.306%
2021-11-09Aaron HavilandManual testing7000001260000012--0.2347.267%
2022-08-25JossManual testing10000001000000--0.1523.958%
2022-09-13JossManual testing1000000130364850--1.45510.699%
2022-09-27mikrMSI60000007731126942--77.2018.411%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-11-04ArtyomPaxioo50000250000027--0.031
2021-11-04ArtyomPaxioo50000250000065--0.031


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-02-23Mark RoseManual testing212600.043
2009-03-15S485122USB-Z2602610.043
2011-06-19markroldgamer2612620.086
2012-07-02GrunwalderGIMPManual testing212630.447
2016-02-23Mark RoseManual testing2622630.275
2015-01-30VictordeHollanderManual testing2632640.549
2015-01-30VictordeHollanderManual testing2642651.046
2016-02-26ramgeisManual testing2652662.091
2017-01-20Gordon SpenceManual testing2662674.182
2018-11-19TJAOIManual testing2672688.365
2020-12-21axnManual testing26826916.73
2021-03-17ANONYMOUSManual testing26927033.46
2021-03-17ANONYMOUSManual testing27027166.92


ECM factoring results:
Total ECM effort:9.169 GHz-days
Estimated T-Level:21.111
DigitsB1CompleteFacMiss
20110002.4079.008%
25500000.22280.074%
302500000.01498.607%


ECM Summary

B1B2factorcurvesGHz-days
50000470000071.008
500005000000476.812
50000500000010.148
50000675000071.202


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-30ANONYMOUSv4_computersACC6D331A8D0C32E0.375


PRP results:
dateuseridcompidcofactorsres64
2022-12-17Funky Waddlemain
1436997312877982885739737
A7D52B5D0CE08B7B


CERT results:
dateuseridcompid
2022-12-17hardmathGowanMobile


P-1 factor-bounds graph:
B1 = 6000000, B2 = 7731126942 (P-1 stage 2)
B1 = 1000000, B2 = 130364850 (P-1 stage 2)
B1 = 6000000 (P-1 stage 1)
B1 = 700000, B2 = 12600000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 700000 (P-1 stage 1)
B1 = 350000, B2 = 3500000 (P-1 stage 2)
B1 = 175000, B2 = 4681250 (P-1 stage 2)
B1 = 350000 (P-1 stage 1)
B1 = 175000 (P-1 stage 1)
B1 = 85000, B2 = 1572500 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
B1 = 20000, B2 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
271
270
269
268
267
266
265
264
263
262
261
260
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=21.11 ~= 54-bit
250
260
270
280
290
JSON version of this page
Last modified: 2024-02-29T14:28:04+00:00