is 2 1338791 - 1
has 403017 decimal digits
takes 0.051 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26722.194668.6567%500000150000000.07144.8807%22.266073.5374%11.0374%
PrimeNet2560.007262.5000%60001000000.00062.6087%0.007865.1087%2.6087%
GPU722600.114765.0000%5500400000.00040.9798%0.115165.9798%0.9798%
Difference+7+22.0799+3.6567%+494500+14960000+0.0710+3.9010%+22.1509+7.5577%+7.5577%

Known prime factors (2 factors, 79.4 bits, 0.00592730% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13387912677583721.3521
1
-112.087e-135.536e-81.127e-7
13387912885700458266041611858.002107772626880
26 × 32 × 5 × 19 × 43 × 163 × 281
2015-01-151632810.04069.380e-61.837e-5

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
13387917726702490145362492228632479.354
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-01-16T12:21:00alpertronManual testing50000015000000121858.0020.0280.1020.0554.881%


Trial Factoring results:
Exponent "1338791" not found


ECM factoring results:
Total ECM effort:11.862 GHz-days
Estimated T-Level:24.536
DigitsB1CurvesCompleteFacMiss
2011000254 / 1002.5407.786%
2550000254 / 2800.90740.302%

ECM Summary

B1B2factorcurvesGHz-days
50000500000025411.86


Lucas-Lehmer results:
Exponent "1338791" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T05:41:02Oliver KruseGTX-0
2677583
288570045826604161
A835A7A54BCD4A__no
2017-10-23T06:46:47kkmrkkblmbrbkold
2677583
288570045826604161
A835A7A54BCD4A__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (stage 2)
B1 = 500000 (stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2018-08-31T10:14:13+00:00