is 2 78651211 - 1
has 23676374 decimal digits
takes 245.430 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
Actual27597.289164.0000%6600006600002.98631.5558%100.275464.5601%0.5601%
PrimeNet2716.078561.9718%340000160000005.39895.2360%11.477363.9630%1.9911%
GPU7227597.289164.0000%500000170000006.32993.7748%103.619065.3589%1.3589%
Difference---+160000-16340000-3.3436-2.2190%-3.3436-0.7988%-0.7988%

Known prime factors (1 factor, 86.9 bits, 0.00011053% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
786512111474937469906055911669310572786.931937644475624193448
23 × 33 × 31 × 337 × 6329 × 7789 × 8429
2016-06-1877898429273,7780.03540.0717

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-06-19T02:13:58Jwb52zClay6600006600002786.9312.986490.95.9731.556%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-02-24T00:00:00Jocelyn Larouchev4_computers21257--0.000--
2008-01-15T00:00:001997rj7v4_computers21263--0.020--
2008-03-11T00:00:001997rj7v4_computers21264--0.045--
2010-11-07T17:52:00Charles A. Morrischandra264265--0.048--
2010-11-09T18:41:00Charles A. Morrischandra265266--0.095--
2010-11-14T15:34:00arnaudSPR12266267--0.190--
2010-11-20T16:02:00arnaudSRV-140267268--0.380--
2010-11-25T02:52:00ANONYMOUSCarnegie15268269--0.760--
2010-12-03T18:39:00Simon DennisDella269270--1.520--
2013-01-17T06:51:00Bold_SeekerManual testing270271--3.040--
2015-08-25T13:22:00RichD0Manual testing271272--6.081--
2016-06-11T08:30:30AirSquirrelsManual testing272273--12.16--
2016-06-11T09:35:30AirSquirrelsManual testing273274--24.32--
2016-06-11T11:50:30AirSquirrelsManual testing274275--48.65--


ECM factoring results:
No ECM results for M78651211


Lucas-Lehmer results:
No L-L results for M78651211


PRP results:
No PRP results for M78651211


P-1 factor-bounds graph:
B1 = 660000 (P-1 stage 1)
102
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104
105
106
102
103
104
105
106
TF factor-bounds graph:
275
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273
272
271
270
269
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257
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2100
Last modified: 2016-06-19T02:13:58+00:00