is 2 18305527 - 1
has 5510513 decimal digits
takes 11.136 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
Actual2683.256163.2353%----3.256163.2353%0.0000%
PrimeNet2650.398661.5385%8000026000000.19174.6523%0.590263.3278%1.7893%
GPU722696.521963.7681%13000036000000.28143.4617%6.803365.0224%1.2543%
Difference-1-3.2658-0.5328%-130000-3600000-0.2814-3.4617%-3.5472-1.7871%-1.7871%

Known prime factors (2 factors, 95.3 bits, 0.00052077% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1830552711966322999911340.12232685
3 × 5 × 2179
-521798.599e-90.00010.0002
18305527416121468583087511755.2081136600625
3 × 54 × 29 × 20903
2015-08-06625209030.00040.00150.0019

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18305527497944390026212654975325212412995.330
P-1 results:
No P-1 results for M18305527


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-01-12T12:28:00TJAOIManual testing255256*55.208170.00023.080.000
2022-06-24T02:43:31LordJuliusManual testing2126540.122138.59921e-923.081.78198e-8
2022-06-24T02:43:31LordJuliusManual testing2126555.208170.00023.080.001
2022-06-24T02:43:31LordJuliusManual testing265266--0.408--
2022-06-24T02:43:31LordJuliusManual testing266267--0.816--
2022-04-11T17:13:52LordJuliusManual testing267268--1.633--


ECM factoring results:
No ECM results for M18305527


Lucas-Lehmer results:
No L-L results for M18305527


PRP results:
No PRP results for M18305527


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
TF factor-bounds graph:
268
267
266
265
256
240
250
260
270
280
290
2100
Last modified: 2022-06-24T02:43:31+00:00