is 2 77149753 - 1
has 23224390 decimal digits
takes 217.519 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
Actual27449.590163.5135%700000129500005.59034.1038%55.180465.0108%1.4973%
PrimeNet2703.097261.4286%340000160000004.87805.7511%7.975363.6468%2.2183%
GPU7227449.590163.5135%500000180000005.94204.1975%55.532165.0450%1.5315%
Difference---+200000-5050000-0.3517-0.0938%-0.3517-0.0342%-0.0342%

Known prime factors (1 factor, 76.4 bits, 0.00009904% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
771497531001261544652015404787992476.406648907809628383
33 × 17 × 23 × 83059 × 740041
2015-05-3183059740041257.750.48590.6911

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-06-01T01:40:00Jwb52zClay700000129500002476.4065.590435.011.184.104%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-10T00:00:00ANONYMOUSv4_computers21253--1.55532e-5--
2003-12-02T00:00:00ANONYMOUSv4_computers21261--0.004--
2008-08-04T20:41:00ANONYMOUSManual testing21265--0.095--
2010-12-17T04:55:00Christian GeschwentnerManual testing265266--0.097--
2011-02-20T11:21:00RabelaisMultivac266267--0.194--
2011-02-26T14:41:00marnesnogueira267268--0.387--
2011-02-26T21:41:00ANONYMOUSSlavanator268269--0.775--
2011-02-27T09:49:00ANONYMOUSSlavanator269270--1.550--
2012-12-28T19:13:00SWL551Manual testing270271--3.100--
2012-12-28T19:13:00SWL551Manual testing271272--6.199--
2015-05-30T09:00:00Tim SorberaManual testing272273--12.40--
2015-05-30T09:00:00Tim SorberaManual testing273274--24.80--


ECM factoring results:
No ECM results for M77149753


Lucas-Lehmer results:
No L-L results for M77149753


PRP results:
No PRP results for M77149753


P-1 factor-bounds graph:
B1 = 700000, B2 = 12950000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2015-06-01T01:40:00+00:00