is 2 218395249 - 1
has 65743521 decimal digits
takes 2,050.489 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
Actual2724.378961.1111%----4.378961.1111%0.0000%
PrimeNet27535.037062.6667%9000005500000052.37975.6437%87.416664.7736%2.1070%
GPU72279560.603764.5570%13000005500000057.52854.1130%618.132366.0147%1.4578%
Difference-7-556.2248-3.4459%-1300000-55000000-57.5285-4.1130%-613.7534-4.9036%-1.4578%

Known prime factors (2 factors, 133.2 bits, 0.00006098% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
218395249590708769456553553512065.679135238466075
52 × 5409538643
2012-07-262554095386430.04214,012.47,494.0
2183952492095508186669023943512167.506479751321575
52 × 172 × 2683 × 24749
2022-09-222683247490.19040.05290.0743

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2183952491237835062333393053135356930842764002220141133.185
P-1 results:
No P-1 results for M218395249


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-07-26T09:10:00america64Manual testing??65.679200.0094,2080.018
2011-06-01T09:38:00Charles A. Morrischandra264265--0.017--
2022-09-22T09:50:19TJAOIManual testing267268*67.506210.0544,2080.112
2022-09-25T22:01:24LordJuliusManual testing2126867.506210.1904,2080.391
2022-09-25T22:01:24LordJuliusManual testing2126865.679200.0424,2080.086
2022-09-25T22:01:24LordJuliusManual testing268269--0.274--
2022-09-25T22:01:24LordJuliusManual testing269270--0.547--
2022-09-25T22:01:24LordJuliusManual testing270271--1.095--
2022-09-25T22:01:24LordJuliusManual testing271272--2.190--


ECM factoring results:
No ECM results for M218395249


Lucas-Lehmer results:
No L-L results for M218395249


PRP results:
No PRP results for M218395249


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: 2022-09-25T22:01:24+00:00