is 2 1441049 - 1
has 433799 decimal digits
takes 0.055 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L98A0DA7F2E3A1A95double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26720.619668.6567%500000150000000.07144.9244%20.691170.2002%1.5435%
PrimeNet2560.006762.5000%65001100000.00072.7777%0.007363.5416%1.0416%
GPU722600.106665.0000%6000900000.00061.3553%0.107265.4744%0.4744%
Difference+7+20.5131+3.6567%+494000+14910000+0.0708+3.5691%+20.5839+4.7258%+4.7258%

Known prime factors (1 factor, 68.4 bits, 0.00474919% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14410493998718671975969045592168.438138743327672271
32 × 7 × 2202275042417
2008-12-189220227504241769.8366,642.612,407

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers15000243750---0.002--0.838%
2016-03-17T19:14:22alpertronManual testing5000001500000012---0.071--4.924%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-10-13T00:00:00ANONYMOUSv4_computers21257--0.013--
2003-07-21T00:00:00ANONYMOUSv4_computers21258--0.027--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.360 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000298 / 1002.9805.004%
2550000298 / 2801.06434.432%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.360 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.5380.000%
25500001.64019.395%
302500000.14086.925%
3510000000.01099.024%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000024811.73
250000350000005013.63


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-27T00:00:00ANONYMOUSv4_computers98A0DA7F2E3A1A950.055


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T00:01:23Oliver KruseGTX-1
399871867197596904559
1591E41AE4CC9D__no
2017-10-27T06:02:24kkmrkkblmbrbkc4.xlarge
399871867197596904559
1591E41AE4CC9D__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-28T11:11:51+00:00