is 2 4927409 - 1
has 1483298 decimal digits
takes 0.683 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
Actual2676.030365.6716%----6.030365.6716%0.0000%
PrimeNet2610.062362.2951%220004500000.00913.3052%0.071463.5413%1.2462%
GPU722651.480664.6154%340007000000.01412.4101%1.494865.4682%0.8528%
Difference+2+4.5497+1.0563%-34000-700000-0.0141-2.4101%+4.5356+0.2035%-0.8528%

Known prime factors (2 factors, 87.7 bits, 0.00177952% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4927409985481801929.876100
22 × 52
-25251.483e-115.025e-61.023e-5
49274092522852476185896391857.80825600193491
43 × 2039 × 291983
2015-07-1720392919830.00550.00360.0060

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
49274092486225201888986785216598392787.684
P-1 results:
No P-1 results for M4927409


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-07-17T10:45:00TJAOIManual testing257258*57.808180.0021.4420.003


ECM factoring results:
Total ECM effort:0.630 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.630


Lucas-Lehmer results:
No L-L results for M4927409


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T17:04:19kkmrkkblmbrbkManual testing
985481801
252285247618589639
3C3F12E9FFEFB9__no
2018-04-13T16:51:02Oliver KruseGTX-4
985481801
252285247618589639
3C3F12E9FFEFB9__no


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
TF factor-bounds graph:
267
258
220
230
240
250
260
270
280
290
2100
Last modified: 2019-08-12T05:48:41+00:00