is 2 155755291 - 1
has 46887015 decimal digits
takes 1,022.144 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
Actual2726.140061.1111%----6.140061.1111%0.0000%
PrimeNet27424.563362.1622%6000003400000023.02525.2325%47.588564.1420%1.9799%
GPU72278393.030064.1026%9000003400000025.72433.7930%418.754465.4642%1.3616%
Difference-6-386.8901-2.9915%-900000-34000000-25.7243-3.7930%-412.6144-4.3531%-1.3616%

Known prime factors (2 factors, 133.1 bits, 0.00008543% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
155755291540787277578198246012065.552173601575300
22 × 52 × 1283 × 1353091
2013-02-04128313530910.07320.71301.3102
1557552912091277974336582487932167.503671334489156
22 × 3 × 17 × 3290855339
2022-09-211732908553390.28451,706.13,186.5

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1557552911130936522400729581814307854508807995659341133.055
P-1 results:
No P-1 results for M155755291


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2013-02-04T17:52:00Mr-PlonkLinux-i7??65.552200.0262,1050.054
2011-01-24T05:01:00ANONYMOUS264265--0.024--
2022-09-21T07:14:32TJAOIManual testing267268*67.503210.0942,1050.193
2022-09-25T22:01:23LordJuliusManual testing2126867.503210.2842,1050.586
2022-09-25T22:01:23LordJuliusManual testing2126865.552200.0732,1050.151
2022-09-25T22:01:23LordJuliusManual testing268269--0.384--
2022-09-25T22:01:23LordJuliusManual testing269270--0.768--
2022-09-25T22:01:23LordJuliusManual testing270271--1.535--
2022-09-25T22:01:23LordJuliusManual testing271272--3.071--


ECM factoring results:
No ECM results for M155755291


Lucas-Lehmer results:
No L-L results for M155755291


PRP results:
No PRP results for M155755291


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
272
271
270
269
268
265
2
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:23+00:00