is 2 61893679 - 1
has 18631854 decimal digits
takes 145.393 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
Actual2670.480161.1940%----0.480161.1940%0.0000%
PrimeNet2703.860762.8571%260000120000003.06435.1415%6.924964.7668%1.9097%
GPU7227461.813564.8649%400000130000003.70073.7210%65.514266.1722%1.3074%
Difference-7-61.3334-3.6708%-400000-13000000-3.7007-3.7210%-65.0342-4.9782%-4.9782%

Known prime factors (2 factors, 113.8 bits, 0.00018394% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
618936797125256030791111549.3405756045
5 × 1151209
-511512092.299e-60.21370.3990
61893679262081442170867081192064.507211719069221
11 × 211 × 91218901
2017-10-25211912189010.079216.92931.617

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
618936791867397376386402210293341732300220935113.847
P-1 results:
No P-1 results for M61893679


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2017-10-25T11:41:16TJAOIManual testing264265*64.507200.022299.90.045


ECM factoring results:
No ECM results for M61893679


Lucas-Lehmer results:
No L-L results for M61893679


PRP results:
No PRP results for M61893679


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
265
240
250
260
270
280
290
2100
Last modified: 2017-10-25T11:41:16+00:00