is 2 12639793 - 1
has 3804957 decimal digits
takes 4.866 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP3BE5D23DED6F83__
unverified PRP test

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.350864.1791%40000042845985013.24279.9829%15.593667.7551%3.5760%
PrimeNet2640.281662.5000%5500017000000.08074.2569%0.362364.0963%1.5963%
GPU722684.715764.7059%9000022000000.11443.0954%4.830165.7984%1.0925%
Difference-1-2.3648-0.5268%+310000+426259850+13.1283+6.8875%+10.7635+1.9567%+2.4835%

Known prime factors (2 factors, 118.6 bits, 0.00093836% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
126397934796617155318071548.76918974271
3 × 1543 × 4099
-154340995.889e-60.00090.0018
1263979310545940113630850185372269.83741717218445076
22 × 3 × 173 × 3271 × 6143381
2021-08-073271614338110.7480.18860.3490

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1263979350584837267998732508323236540810635936118.606
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-03-29T18:39:46nordisweet16_30.8b11400000400000-
skipped known factor: 479661715531807
--0.223--2.424%
2022-04-22T01:51:56nordisweet16_30.8b14400000428459850-
skipped known factor: 479661715531807
skipped known factor: 1054594011363085018537
--13.24--9.983%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-08-07T12:17:56ATHec2-P_11000001000000027P-12269.8370.380


Trial Factoring results:
No TF results for M12639793


ECM factoring results:
No ECM results for M12639793


Lucas-Lehmer results:
No L-L results for M12639793


PRP results:
dateuseridcompidcofactorsres64PRP
2022-04-27T06:44:27mrhlanai
479661715531807
1054594011363085018537
3BE5D23DED6F83__no


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2022-04-27T06:44:27+00:00