is 2 75966391 - 1
has 22868163 decimal digits
takes 210.024 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
Actual275100.727664.0000%62500093750004.41663.4284%105.144265.2342%1.2342%
PrimeNet2703.145561.4286%320000140000004.27075.5660%7.416263.5755%2.1469%
GPU7227450.362663.5135%500000180000005.82664.1896%56.189265.0421%1.5286%
Difference+1+50.3649+0.4865%+125000-8625000-1.4100-0.7612%+48.9549+0.1921%+0.1921%

Known prime factors (1 factor, 79.5 bits, 0.00010466% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
759663918571633360038484367117212479.5045641727379176460
22 × 3 × 5 × 11 × 13 × 61 × 2593 × 4157119
2015-05-04259341571192,993.10.91781.6958

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-05-04T05:22:00guruw362500093750002479.5044.417420.08.8333.428%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-06-02T20:59:00Architects Cubedm1_29263264--0.026--
2010-10-31T00:13:00RonnyKarlQuad1264265--0.049--
2010-11-05T05:03:00Helmut Zulusvibra265266--0.098--
2010-11-05T07:55:00Jeff Palmerralph-laptop266267--0.197--
2010-11-05T15:27:00Jeff Palmerralph-laptop267268--0.393--
2010-11-06T03:36:00Jeff Palmerralph-laptop268269--0.787--
2010-11-07T02:15:00Jeff Palmerralph-laptop269270--1.574--
2012-12-15T09:26:00Jase428270271--3.148--
2015-04-10T06:50:00NickOfTimeManual testing271272--6.296--
2015-04-10T06:50:00NickOfTimeManual testing272273--12.59--
2015-04-10T06:50:00NickOfTimeManual testing273274--25.18--
2015-04-10T06:50:00NickOfTimeManual testing274275--50.36--


ECM factoring results:
No ECM results for M75966391


Lucas-Lehmer results:
No L-L results for M75966391


PRP results:
No PRP results for M75966391


P-1 factor-bounds graph:
B1 = 625000, B2 = 9375000 (P-1 stage 2)
B1 = 625000 (P-1 stage 1)
102
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104
105
106
102
103
104
105
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107
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
250
260
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2100
Last modified: 2015-05-04T05:22:00+00:00