is 2 4898819 - 1
has 1474692 decimal digits
takes 0.679 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
Actual2676.065565.6716%----6.065565.6716%0.0000%
PrimeNet2610.062762.2951%220004500000.00913.3020%0.071863.5401%1.2450%
GPU722651.489364.6154%320007000000.01372.3739%1.503065.4554%0.8400%
Difference+2+4.5762+1.0563%-32000-700000-0.0137-2.3739%+4.5625+0.2163%+0.2163%

Known prime factors (2 factors, 99.7 bits, 0.00203564% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
489881939190553825.2244
22
-449.133e-138.039e-71.636e-6
4898819266821654909501385066472374.4982723326325278617
3 × 31727 × 62981 × 454297
2019-07-2762981454297881.900.01690.0258

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
489881910456888208278524235020901057913199.722
P-1 results:
No P-1 results for M4898819


Trial Factoring results:
No TF results for M4898819


ECM factoring results:

Old Calculation Method

Total ECM effort:0.629 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.629 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.629


Lucas-Lehmer results:
No L-L results for M4898819


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:45:19kkmrkkblmbrbkManual testing
39190553
D6EF47A0D6AC0C__no
2018-04-04T23:52:59treborLaptop
39190553
D6EF47A0D6AC0C__no
2019-07-28T10:01:12GANCS-AC
39190553
26682165490950138506647
D64BBAB85B19D8FEno
2019-07-28T11:05:55ATHec2-PRPCFDC
39190553
26682165490950138506647
D64BBAB85B19D8FEno


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2019-07-28T11:05:55+00:00