is 2 2915441 - 1
has 877636 decimal digits
takes 0.225 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26710.191967.1642%----10.191967.1642%0.0000%
PrimeNet2590.026362.7119%130002600000.00303.0672%0.029363.8556%1.1437%
GPU722630.547465.0794%160003000000.00351.9109%0.551065.7467%0.6673%
Difference+4+9.6445+2.0848%-16000-300000-0.0035-1.9109%+9.6410+1.4175%+1.4175%

Known prime factors (2 factors, 85.4 bits, 0.00292972% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
291544123323529824.4754
22
-447.673e-134.480e-79.117e-7
291544122102869964706503671960.939379065636463
83 × 12619 × 361919
2016-03-17126193619190.05590.00350.0041

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2915441515516928605061114835851432685.414
P-1 results:
No P-1 results for M2915441


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-03-17T12:17:07TJAOIManual testing260261*60.939190.0030.4580.007


ECM factoring results:

Old Calculation Method

Total ECM effort:0.315 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.315 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.315


Lucas-Lehmer results:
No L-L results for M2915441


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-24T22:41:25Oliver KruseGTX-2
23323529
2210286996470650367
93FD3AA30B75C1__no
2017-12-08T19:57:40kkmrkkblmbrbkc4.xlarge
23323529
2210286996470650367
93FD3AA30B75C1__no


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
TF factor-bounds graph:
267
261
220
230
240
250
260
270
280
290
2100
Last modified: 2018-05-27T13:50:49+00:00