is 2 77284993 - 1
has 23265102 decimal digits
takes 217.901 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LC745289566D8EA__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27599.009064.0000%670000127300005.42533.6948%104.434365.3301%1.3301%
PrimeNet2703.091861.4286%340000160000004.87805.7523%7.969863.6473%2.2187%
GPU7227449.503363.5135%500000180000005.94204.1984%55.445365.0454%1.5319%
Difference+1+49.5056+0.4865%+170000-5270000-0.5167-0.5037%+48.9889+0.2847%+0.2847%

Known prime factors:
No known factors for M77284993

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-31T15:51:00driveByUpgradesBuild_467000012730000---5.425--3.695%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00ANONYMOUSv4_computers21253--1.55260e-5--
2003-12-02T00:00:00ANONYMOUSv4_computers21261--0.004--
2016-04-04T01:01:51Mark RoseManual testing261264--0.042--
2010-09-29T20:34:00kevindorekens264265--0.048--
2010-10-04T10:11:00Robert M.elbandito265266--0.097--
2010-10-07T04:49:00Bobbi and the Straysnycdo-rtjia1266267--0.193--
2010-10-11T09:15:00Ethan O'ConnorManual testing267268--0.387--
2010-10-12T07:22:00GrunwalderGIMPLyc-i7268269--0.774--
2010-10-22T11:45:00WizardC586F874D269270--1.547--
2013-01-09T01:19:00guiyuanManual testing270271--3.094--
2015-06-07T22:45:00ChuckManual testing271272--6.188--
2015-08-21T13:20:001997rj7Manual testing272273--12.38--
2015-08-21T13:20:001997rj7Manual testing273274--24.75--
2015-08-23T23:31:00RichD0Manual testing274275--49.51--


ECM factoring results:
No ECM results for M77284993


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2017-07-13T11:09:26OLAFEtsolafeC745289566D8EA__217.9


PRP results:
No PRP results for M77284993


P-1 factor-bounds graph:
B1 = 670000, B2 = 12730000 (P-1 stage 2)
B1 = 670000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2017-07-13T11:09:26+00:00