is 278380221-1
has 23,594,798 decimal digits
takes 244.584 GHz-days to do one L-L test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27448.811663.5135%725,000725,0003.28041.8154%52.092065.3289%3.3571%
PrimeNet2716.099561.9718%320,00016,000,0005.31335.1927%11.412867.1645%5.1927%
GPU7227597.625564.0000%500,00017,000,0006.32993.7731%103.955467.7731%3.7731%
Difference-1-48.8139-0.4865%+225,000-16,275,000-3.0495-1.9578%-51.8634-2.4443%-2.4443%

Known prime factors (1 factor, 117.7 bits, 0.00015015% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
7838022126783399013361471471243238599894618336117.6891708555976983113601532409471
3 × 89 × 17327 × 33797 × 142601 × 171329 × 447263
171,329447,2632015-06-251.955e+90.84321.5777

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-06-25T03:52:00NesowaBSP2725,000725,00036117.6893.280489.26.5611.815%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-04-09T00:00:00AxelFoxv4_computers?262--0.004--
2008-07-10T03:45:00ANONYMOUSManual testing?264--0.025--
2010-12-27T11:49:00GrunwalderGIMPcompute-0-1264265--0.048--
2011-01-02T00:52:00ANONYMOUS265266--0.095--
2011-01-07T19:28:00ANONYMOUS266267--0.191--
2011-01-12T21:59:00Hrudey4098Office_1267268--0.381--
2011-01-18T11:11:00Hrudey4098Office_1268269--0.763--
2011-01-21T02:02:00Charles A. Morrischandra269270--1.525--
2013-01-09T16:43:00jack731Manual testing270271--3.051--
2014-10-01T21:57:00NickOfTimeManual testing271272--6.102--
2015-01-03T22:39:00Jerry HallettManual testing272273--12.20--
2015-01-03T22:39:00Jerry HallettManual testing273274--24.41--


ECM factoring results:
Exponent "78380221" not found


Lucas-Lehmer results:
Exponent "78380221" not found


PRP results:
Exponent "78380221" not found


P-1 factor-bounds graph:
B1 = 725,000 (stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
262
250
260
270
280
290
2100
2110
2120
Last modified: 2015-06-25T03:52:00+00:00