is 2 83404637 - 1
has 25107298 decimal digits
takes 260.263 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
Actual276183.490964.4737%665000121362505.83683.3454%189.327765.6622%1.1885%
PrimeNet2715.732061.9718%360000170000005.73105.3689%11.463064.0135%2.0417%
GPU7227591.744464.0000%550000190000007.03693.9349%98.781365.4166%1.4166%
Difference+1+91.7465+0.4737%+115000-6863750-1.2000-0.5895%+90.5465+0.2456%+0.2456%

Known prime factors (1 factor, 82.2 bits, 0.00009857% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8340463755895079447342396411550092582.20933508376427165792
25 × 3 × 23 × 41 × 113 × 2267 × 1444909
2017-09-082267144490916,0440.36590.6653

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-09-08T21:27:30Jwb52zClay665000121362502582.2095.837520.511.673.345%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-20T07:20:00Architects Cubeda3_bu2264265--0.045--
2012-08-14T06:10:00Carsten KossendeyManual testing265266--0.090--
2013-02-10T23:44:00Andreas Christensen266267--0.179--
2013-06-17T07:34:00frmargnu023267268--0.358--
2013-06-20T10:03:00frmargnu023268269--0.717--
2013-07-15T03:53:00SMoffatManual testing269270--1.434--
2014-03-25T13:18:00LarryGDesktop2270271--2.867--
2016-12-19T03:56:42ANONYMOUSManual testing271272--5.734--
2016-12-19T03:56:42ANONYMOUSManual testing272273--11.47--
2016-12-19T03:56:42ANONYMOUSManual testing273274--22.94--
2016-12-19T03:56:42ANONYMOUSManual testing274275--45.87--
2017-03-05T20:46:29TheJudgerManual testing275276--91.75--


ECM factoring results:
No ECM results for M83404637


Lucas-Lehmer results:
No L-L results for M83404637


PRP results:
No PRP results for M83404637


P-1 factor-bounds graph:
B1 = 665000, B2 = 12136250 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2017-09-08T21:27:30+00:00