is 2 1466317 - 1
has 441406 decimal digits
takes 0.056 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7640ABCD1BB30070double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26720.264368.6567%2000000600000000.28577.2374%20.550070.9252%2.2684%
PrimeNet2560.006562.5000%70001200000.00072.9104%0.007363.5914%1.0914%
GPU722600.104765.0000%65001000000.00061.4463%0.105465.5062%0.5062%
Difference+7+20.1596+3.6567%+1993500+59900000+0.2850+5.7911%+20.4446+5.4189%+5.4189%

Known prime factors (1 factor, 66.3 bits, 0.00452364% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1466317928087744210928539672066.33131646899824899
523 × 60510324713
2015-05-275236051032471310.864182.52340.89

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers20000265000---0.002--0.956%
2009-04-25T10:19:00axnManual testing80000016000000---0.090--5.263%
2015-05-24T13:03:00alpertronManual testing200000060000000---0.286--7.237%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-10-06T00:00:00ANONYMOUSv4_computers21257--0.013--
2003-07-30T00:00:00ANONYMOUSv4_computers21258--0.026--
2010-05-07T17:20:00Architects Cubeda3_bu2260261--0.105--
2011-04-05T20:59:00GrunwalderGIMPManual testing21263--1.088--
2015-04-01T00:53:00snme2pm1Manual testing263264--1.339--
2015-04-01T00:53:00snme2pm1Manual testing264265--2.548--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.585 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.585 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.35725.749%
302500000.11389.315%
3510000000.00899.236%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025011.86
50000500000010.047
250000350000005013.68


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-26T00:00:00ANONYMOUSv4_computers7640ABCD1BB300700.056


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T04:02:46Oliver KruseGTX-3
92808774421092853967
A3E1BFB88A46AA__no
2017-10-28T02:27:59kkmrkkblmbrbkold
92808774421092853967
A3E1BFB88A46AA__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 800000, B2 = 16000000 (P-1 stage 2)
B1 = 800000 (P-1 stage 1)
B1 = 20000, B2 = 265000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
101
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105
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107
101
102
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1010
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TF factor-bounds graph:
267
265
264
263
261
258
257
250
260
270
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290
2100
Last modified: 2022-01-18T14:05:57+00:00