is 2 13073239 - 1
has 3935438 decimal digits
takes 5.340 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L91CC230F4BB9CF7Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.272964.1791%15500023250000.16183.8377%2.434765.5538%1.3747%
PrimeNet2640.272362.5000%6000017000000.08854.3407%0.360764.1278%1.6278%
GPU722684.559364.7059%9000024000000.12783.1715%4.687265.8252%1.1193%
Difference-1-2.2864-0.5268%+65000-75000+0.0340+0.6663%-2.2524-0.2714%-0.2714%

Known prime factors (1 factor, 72.9 bits, 0.00055740% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1307323986333489012155972299672272.870330191657217297
32 × 172 × 1571 × 80807107
2016-05-22157180807107127.272.60854.8703

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-10-20T00:00:00ANONYMOUSv4_computers1550002325000---0.162--3.838%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-05-10T00:00:00ANONYMOUSv4_computers21264--0.272--
2013-05-27T11:15:00lycornManual testing264265--0.286--
2014-05-19T10:26:00NesowaManual testing265266--0.572--
2015-07-06T21:08:00NesowaManual testing266267--1.143--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.621 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.621 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03296.826%
25500000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.621


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-22T00:00:00ANONYMOUSv4_computers91CC230F4BB9CF7A5.340
2005-04-11T00:00:00Team Prime Ribv4_computers91CC230F4BB9CF7A5.340


PRP results:
No PRP results for M13073239


P-1 factor-bounds graph:
B1 = 155000, B2 = 2325000 (P-1 stage 2)
B1 = 155000 (P-1 stage 1)
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108
TF factor-bounds graph:
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264
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2100
Last modified: 2016-05-22T23:04:35+00:00