is 2 595807 - 1
has 179356 decimal digits
takes 0.009 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actualunknown175000053997843906.518145.7959%6.518145.7959%
Target2440.000054.5455%100003600000.000615.4153%0.000661.5524%
Difference-440.0000-54.5455%+1740000+5399424390+6.5175+30.3806%+6.5175-15.7565%

Known prime factors (2 factors, 120.4 bits, 0.02020743% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
59580767921999826.01757
3 × 19
-3191.519e-118.530e-81.345e-7
595807257736395570932002461241772092994.38021629184918180887641572
22 × 32 × 11 × 199 × 6491 × 449971 × 93971413
2023-01-02449971939714136.926e+90.12220.2107

1 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-01-02USAFSSUSAFSACS175000053997843902994.3806.5180.01813.0445.796%


Trial Factoring results:
No TF results for M595807


ECM factoring results:
Total ECM effort:18.716 GHz-days
Estimated T-Level:26.530
DigitsB1CompleteFacMiss
201100024.8080.000%
25500003.1824.149%
302500000.30673.637%
3510000000.02397.679%
4030000000.00299.849%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002814.758
25000025000000443.725
2500004000000010010.23


Lucas-Lehmer results:
No L-L results for M595807


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27Oliver KruseGTX-1
67921999
29AAD5FA9BD294__no
2017-09-28Oliver KruseManual testing
67921999
29AAD5FA9BD294__no
2017-11-08kkmrkkblmbrbkc4.xlarge
67921999
29AAD5FA9BD294__no
2020-04-19Oliver KruseAddPrpType5
67921999
46E403DE88DBB8__no
2023-01-03/r/counting
67921999
25773639557093200246124177209
46E403DE88DBB8C8no
2023-01-03LordJuliusWhiteBox
67921999
25773639557093200246124177209
46E403DE88DBB8C8no


P-1 factor-bounds graph:
B1 = 1750000, B2 = 5399784390 (P-1 stage 2)
B1 = 1750000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67.7
ECM T-Level=26.53 ~= 72-bit
250
260
270
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290
2100
Last modified: 2023-03-25T13:08:14+00:00