is 2 920768171 - 1
has 277178839 decimal digits
takes 40,036.364 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
Actual2744.155159.4595%----4.155159.4595%0.0000%
PrimeNet281531.874762.9630%32000002400000001,015.17085.6963%1,547.045565.0727%2.1098%
GPU722858,509.998164.7059%50000002400000001,122.47444.2928%9,632.472666.2210%1.5151%
Difference-11-8,505.8430-5.2464%-5000000-240000000-1,122.4744-4.2928%-9,628.3175-6.7615%-1.5151%

Known prime factors (2 factors, 131.5 bits, 0.00001428% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
920768171187453773029050030812064.02310179205740
22 × 33 × 5 × 11 × 1713671
2011-09-032717136710.00505.888110.994
9207681712091494939808798918892167.503113573373064
23 × 14196671633
2022-09-218141966716330.038248,76691,081

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
920768171392058617738325248384656176072849191000940131.526
P-1 results:
No P-1 results for M920768171


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-09-03T14:42:00lindedskynet-node030??64.023200.00181,9930.002
2010-07-14T19:55:00lindedManual testing263264--0.002--
2022-09-21T07:16:00TJAOIManual testing267268*67.503210.00681,9930.012
2022-09-25T22:01:48LordJuliusManual testing2127064.023200.00581,9930.010
2022-09-25T22:01:48LordJuliusManual testing2127067.503210.03881,9930.078
2022-09-25T22:01:48LordJuliusManual testing270271--0.260--
2022-09-25T22:01:48LordJuliusManual testing271272--0.519--
2022-09-25T22:01:48LordJuliusManual testing272273--1.039--
2022-09-25T22:01:48LordJuliusManual testing273274--2.078--


ECM factoring results:
No ECM results for M920768171


Lucas-Lehmer results:
No L-L results for M920768171


PRP results:
No PRP results for M920768171


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
274
273
272
271
270
268
264
2
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:48+00:00