is 2 77321767 - 1
has 23276172 decimal digits
takes 218.004 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
Actual27598.961964.0000%645000124162505.25883.6591%104.220765.3173%1.3173%
PrimeNet2703.090361.4286%340000160000004.87805.7526%7.968463.6474%2.2189%
GPU7227449.479863.5135%500000180000005.94204.1987%55.421865.0455%1.5319%
Difference+1+49.4821+0.4865%+145000-5583750-0.6832-0.5395%+48.7989+0.2718%+0.2718%

Known prime factors (1 factor, 75.7 bits, 0.00009796% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
77321767634103080398416664536392375.747410041767668357
11 × 1933 × 8753 × 2203163
2016-02-2187532203163143.020.52460.9165

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-02-21T20:42:28Jwb52zClay645000124162502375.7475.259436.010.523.659%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00ANONYMOUSv4_computers21253--1.55186e-5--
2003-12-02T00:00:00ANONYMOUSv4_computers21261--0.004--
Missing TF 61 - 62
Missing TF 62 - 63
Missing TF 63 - 64
2010-10-05T02:19:00Bob BallantyneRAB-Develop264265--0.048--
2010-10-07T20:42:00vapaddycardano265266--0.097--
2010-10-09T03:30:00vapaddycardano266267--0.193--
2010-10-14T15:47:00Wolfgang Stegerff-eblgate267268--0.387--
2010-10-20T13:56:00Wolfgang Stegerff-eblgate268269--0.773--
2010-10-22T13:29:00TeraTismphenom269270--1.546--
2012-12-30T03:39:00Florimond C.arm.durga270271--3.093--
2015-06-10T23:45:00ChuckManual testing271272--6.185--
2015-11-04T22:29:33RichD0Manual testing272273--12.37--
2016-02-17T16:35:27AirSquirrelsManual testing273274--24.74--
2016-02-17T18:15:11AirSquirrelsManual testing274275--49.48--


ECM factoring results:
No ECM results for M77321767


Lucas-Lehmer results:
No L-L results for M77321767


PRP results:
No PRP results for M77321767


P-1 factor-bounds graph:
B1 = 645000, B2 = 12416250 (P-1 stage 2)
B1 = 645000 (P-1 stage 1)
102
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105
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104
105
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108
TF factor-bounds graph:
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272
271
270
269
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2100
Last modified: 2016-02-21T20:42:28+00:00