is 2 14380981 - 1
has 4329107 decimal digits
takes 6.887 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L52FA08A39C4DAD0Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.066264.1791%17500037625000.25724.3859%2.323465.7502%1.5711%
PrimeNet2650.507363.0769%6000019000000.11134.0177%0.618664.5604%1.4835%
GPU722698.301765.2174%10000024000000.15652.9220%8.458266.2337%1.0164%
Difference-2-6.2355-1.0383%+75000+1362500+0.1008+1.4639%-6.1347-0.4836%-0.4836%

Known prime factors (1 factor, 72.1 bits, 0.00050121% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1438098149898544473455675084732272.079173487971625356
22 × 3853 × 11256681263
2016-10-11385311256681263120.86425.87795.40

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-07-06T00:00:00ANONYMOUSv4_computers1750003762500---0.257--4.386%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00Net_Forcev4_computers21256--0.001--
2000-09-15T00:00:00Net_Forcev4_computers21257--0.001--
2000-09-23T00:00:00Net_Forcev4_computers21258--0.003--
2000-10-15T00:00:00lalerav4_computers21259--0.005--
2000-11-15T00:00:00Zvjezdan Patzv4_computers21265--0.507--
2014-08-14T09:48:00NesowaManual testing265266--0.520--
2015-09-26T14:38:34NesowaManual testing266267--1.039--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.728 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.728 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03296.826%
25500000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.728


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-01-16T00:00:00MadPoov4_computers52FA08A39C4DAD0F6.887
2003-07-30T00:00:00ANONYMOUSv4_computers52FA08A39C4DAD0F6.887


PRP results:
No PRP results for M14380981


P-1 factor-bounds graph:
B1 = 175000, B2 = 3762500 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
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1010
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TF factor-bounds graph:
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2100
Last modified: 2016-10-11T09:49:18+00:00