is 2 1082593 - 1
has 325893 decimal digits
takes 0.032 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8E040026661EB0B4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26727.447068.6567%300000100000000.03564.1063%27.482669.9438%1.2871%
PrimeNet2560.008962.5000%4500650000.00032.0208%0.009263.2578%0.7578%
GPU722600.141965.0000%4500200000.00020.6530%0.142165.2286%0.2286%
Difference+7+27.3051+3.6567%+295500+9980000+0.0354+3.4533%+27.3405+4.7152%+4.7152%

Known prime factors (1 factor, 83.0 bits, 0.00766556% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
108259395834343310935250780516572582.9874426148299080783396
22 × 3 × 11 × 17 × 137 × 13523 × 1064656459
2007-09-271352310646564591,757,7842.49344.6560

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
unknown30000010000000---0.036--4.106%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-24T00:00:00ANONYMOUSv4_computers21257--0.018--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.597 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.597 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002819.87
25000025000000447.727


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-01-18T00:00:00ANONYMOUSv4_computers8E040026661EB0B40.032


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T23:46:33Oliver KruseGTX-3
9583434331093525078051657
20E51F0348E842__no
2017-10-16T08:24:27Oliver KruseThreadripper
9583434331093525078051657
20E51F0348E842__no
2018-01-02T14:05:17ATHec2-1xf
9583434331093525078051657
20E51F0348E842__no


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
257
250
260
270
280
290
2100
Last modified: 2020-11-20T10:35:53+00:00