is 2 61761823 - 1
has 18592162 decimal digits
takes 145.083 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
Actual2670.481161.1940%----0.481161.1940%0.0000%
PrimeNet2703.868962.8571%260000120000003.06435.1401%6.933264.7663%1.9092%
GPU7227461.945564.8649%400000130000003.70073.7200%65.646266.1719%1.3070%
Difference-7-61.4644-3.6708%-400000-13000000-3.7007-3.7200%-65.1651-4.9778%-4.9778%

Known prime factors (1 factor, 56.9 bits, 0.00009215% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
617618231354444512205476071856.9101096506261
33 × 40611343
-27406113430.00027.536614.076

P-1 results:
No P-1 results for M61761823


Trial Factoring results:
No TF results for M61761823


ECM factoring results:
No ECM results for M61761823


Lucas-Lehmer results:
No L-L results for M61761823


PRP results:
No PRP results for M61761823


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
250
260
270
280
290
2100