is 2 5082713 - 1
has 1530050 decimal digits
takes 0.705 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCDB2B6E2C896E66Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.846165.6716%1500000450000000.77787.6758%6.623968.3066%2.6350%
PrimeNet2610.060462.2951%220005000000.00973.4076%0.070163.5799%1.2848%
GPU722651.435464.6154%340007000000.01412.4227%1.449565.4726%0.8573%
Difference+2+4.4107+1.0563%+1466000+44300000+0.7637+5.2531%+5.1744+2.8340%+2.8340%

Known prime factors (1 factor, 86.0 bits, 0.00169231% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5082713782007260174646276995975692686.0157692813465708631168
27 × 61 × 719 × 18181 × 75370039
2017-07-2518181753700396,105,1780.82881.5415

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-08-21T03:34:00harleeP4_260055000907500---0.020--2.227%
2017-07-25T11:35:15mikrS066150000045000000122686.0150.7781.4091.5567.676%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:39:08Mark RoseManual testing21261--0.060--
2008-12-29T01:13:00Sturle Sundebruckner.ifi261262--0.060--
2009-08-08T04:06:00GrunwalderGIMPManual testing21263--0.314--
2016-02-23T16:39:08Mark RoseManual testing262263--0.193--
2014-09-01T13:54:00krackerManual testing263264--0.386--
2014-09-15T12:51:00monstManual testing264265--0.735--
2015-08-03T11:44:00snme2pm1Manual testing265266--1.470--
2016-05-24T17:43:32Gordon SpenceManual testing266267--2.940--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CurvesCompleteFacMiss
20110009 / 1000.09091.352%
25500009 / 2800.03296.831%

New Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CompleteFacMiss
20110000.29074.802%
25500000.02697.410%
302500000.00299.839%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.897


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-08-24T00:00:00ANONYMOUSv4_computersCDB2B6E2C896E66A0.705
2000-04-05T00:00:00ANONYMOUSv4_computersCDB2B6E2C896E66A0.705


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T13:09:49alpertronManual testing
78200726017464627699597569
E07C3EFF7D976B__no
2018-01-19T12:35:07kkmrkkblmbrbkc4.xlarge
78200726017464627699597569
E07C3EFF7D976B__no


P-1 factor-bounds graph:
B1 = 1500000, B2 = 45000000 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 55000, B2 = 907500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
103
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105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
267
266
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2018-01-19T12:35:07+00:00