is 2 243653471 - 1
has 73347004 decimal digits
takes 2,561.746 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2670.122058.2090%----0.122058.2090%
Target279502.489064.5570%1500000480000000420.30854.3026%922.797566.0819%
Difference-12-502.3671-6.3480%-1500000-480000000-420.3085-4.3026%-922.6755-7.8730%

Known prime factors (1 factor, 66.3 bits, 0.00002719% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
243653471879279695119218766392066.253180436521489
3 × 7 × 8592215309		2015-12-08785922153090.06877,136.713,329

P-1 results:
No P-1 results for M243653471


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-12-08SyntonyEvolution??66.253200.0085,6970.018
2011-07-14sasaki3mate_ma1264265--0.015--
2013-10-30Yan Ruimin ChinaManual testing265266--0.031--


ECM factoring results:
No ECM results for M243653471


Lucas-Lehmer results:
No L-L results for M243653471


PRP results:
No PRP results for M243653471


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
266
265
2
this exponent TF target: 79
TF double-checked to: 67.9
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00