is 2 18403771 - 1
has 5540088 decimal digits
takes 11.196 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
Actual2683.238763.2353%----3.238763.2353%0.0000%
PrimeNet2650.396461.5385%8000026000000.19174.6557%0.588163.3291%1.7907%
GPU722696.487163.7681%13000036000000.28143.4644%6.768565.0233%1.2552%
Difference-1-3.2484-0.5328%-130000-3600000-0.2814-3.4644%-3.5298-1.7880%-1.7880%

Known prime factors (2 factors, 114.5 bits, 0.00062243% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18403771751387227783592491756.0602041394744
23 × 181 × 1409803
-18114098030.00070.06790.1265
184037714046282622014795771858.48910993080228
22 × 3 × 132 × 29 × 41 × 47 × 97
2015-09-091691690.00330.00010.0003

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
184037713040325082184623221619932424255767335114.550
P-1 results:
No P-1 results for M18403771


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-09-09T11:12:00TJAOIManual testing258259*58.489180.00123.210.003
2022-06-24T02:43:32LordJuliusManual testing2126558.489180.00323.210.007
2022-06-24T02:43:32LordJuliusManual testing2126556.060170.00123.220.001
2022-06-24T02:43:32LordJuliusManual testing265266--0.406--
2022-06-24T02:43:32LordJuliusManual testing266267--0.812--
2022-04-11T17:13:55LordJuliusManual testing267268--1.624--


ECM factoring results:
No ECM results for M18403771


Lucas-Lehmer results:
No L-L results for M18403771


PRP results:
No PRP results for M18403771


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
259
250
260
270
280
290
2100
Last modified: 2022-06-24T02:43:32+00:00