is 2 168864391 - 1
has 50833247 decimal digits
takes 1,149.216 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
Actual2725.663361.1111%----5.663361.1111%0.0000%
PrimeNet27422.656462.1622%7000004000000028.03685.5293%50.693364.2543%2.0922%
GPU72278362.518764.1026%10000004000000030.83603.9994%393.354765.5382%1.4357%
Difference-6-356.8554-2.9915%-1000000-40000000-30.8360-3.9994%-387.6914-4.4271%-1.4357%

Known prime factors (2 factors, 133.1 bits, 0.00007880% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
168864391544055002276238763672065.560161092282113
33 × 7 × 53 × 16081889
2013-03-2953160818890.05798.646716.149
1688643912086339737732394973212167.500617755977260
22 × 5 × 1153 × 1427 × 18773
2022-09-201427187730.35140.02340.0287

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1688643911135083570761005532361345333127653171280741133.060
P-1 results:
No P-1 results for M168864391


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2013-03-29T21:10:00Richard172.26.176.46??65.560200.0152,3630.030
2010-07-08T13:53:00OS1corner263264--0.012--
2011-02-18T02:05:00tscprt264265--0.022--
2022-09-20T08:09:18TJAOIManual testing267268*67.500210.1752,3620.361
2022-09-25T22:01:23LordJuliusManual testing2126867.500210.3512,3620.722
2022-09-25T22:01:23LordJuliusManual testing2126865.560200.0582,3630.119
2022-09-25T22:01:23LordJuliusManual testing268269--0.354--
2022-09-25T22:01:23LordJuliusManual testing269270--0.708--
2022-09-25T22:01:23LordJuliusManual testing270271--1.416--
2022-09-25T22:01:23LordJuliusManual testing271272--2.832--


ECM factoring results:
No ECM results for M168864391


Lucas-Lehmer results:
No L-L results for M168864391


PRP results:
No PRP results for M168864391


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
265
264
2
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:23+00:00