is 2 770669 - 1
has 231995 decimal digits
takes 0.015 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LB2AEE0D7880159FDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26738.556070.1493%77066902312007000.57589.2123%39.131872.8992%2.7499%
PrimeNet2400.000050.0000%70002800000.000622.0208%0.000661.0104%11.0104%
GPU722440.000054.5455%130005000000.001117.0473%0.001162.2942%7.7488%
Difference+23+38.5560+15.6038%+7693690+230700700+0.5747-7.8350%+39.1307+10.6050%+10.6050%

Known prime factors (1 factor, 80.3 bits, 0.01042389% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
77066915234917686264799157553132580.334988421597745906424
23 × 123552699718238303
2016-02-128123552699718238303388,156194,942,136364,097,622

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-02T00:00:00ANONYMOUSv4_computers2000200000---0.000--0.201%
2002-02-03T00:00:00ANONYMOUSv4_computers4096409600---0.001--0.430%
2002-03-24T00:00:00ANONYMOUSv4_computers8192819200---0.002--0.777%
2002-05-18T00:00:00ANONYMOUSv4_computers163841638400---0.003--1.264%
2002-07-20T00:00:00ANONYMOUSv4_computers327683276800---0.006--1.897%
2002-12-02T00:00:00ANONYMOUSv4_computers655376553700---0.012--2.671%
2003-07-13T00:00:00ANONYMOUSv4_computers13107213107200---0.024--3.572%
2011-07-10T12:45:00Jocelyn LaroucheManual testing279426279426---0.008--1.335%
2011-08-24T01:39:00Jocelyn LaroucheManual testing465711465711---0.013--1.697%
2011-12-10T20:03:00Jocelyn LaroucheManual testing931423931423---0.027--2.270%
2012-07-21T19:06:00Jocelyn LaroucheManual testing15413381541338---0.045--2.747%
2013-10-26T15:30:00David Campeaui5-2500k168500057290000---0.137--6.612%
2015-11-20T05:39:17Sid & AndySpeck770669023120070012---0.576--9.212%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-09-23T00:00:00ANONYMOUSv4_computers21255--0.006--
2001-03-11T00:00:00ANONYMOUSv4_computers21256--0.012--
2001-12-22T00:00:00ANONYMOUSv4_computers21257--0.025--
2003-09-29T00:00:00ANONYMOUSv4_computers21258--0.050--
2008-10-11T01:23:00Sturle Sundegoober.ifi258259--0.050--
2008-10-11T01:54:00Sturle Sundegoober.ifi259260--0.100--
2010-06-24T15:37:00Architects Cubedm1_fw260261--0.199--
2015-03-06T23:11:00NRManual testing261262--0.399--
2015-10-22T08:40:26Gordon SpenceManual testing262263--1.274--
2015-10-22T08:40:26Gordon SpenceManual testing263264--2.548--


ECM factoring results:

Old Calculation Method

Total ECM effort:11.402 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:11.402 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002796.350
50000500000020.046
25000025000000445.007


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-10-26T00:00:00ANONYMOUSv4_computersB2AEE0D7880159FD0.015
2015-04-11T15:48:00MadPooManual testingB2AEE0D7880159FD0.015


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27T23:34:02Oliver KruseGTX-3
1523491768626479915755313
1D5B09CC654F2C__no
2017-10-13T19:25:33Oliver KruseThreadripper1D5B09CC654F2C__no
2017-12-17T14:47:40ATHec2-1xf
1523491768626479915755313
1D5B09CC654F2C__no
2020-04-21T01:38:33Oliver KruseAddPrpType5
1523491768626479915755313
9682ADD0207D2B__no


P-1 factor-bounds graph:
B1 = 7706690, B2 = 231200700 (P-1 stage 2)
B1 = 7706690 (P-1 stage 1)
B1 = 1685000, B2 = 57290000 (P-1 stage 2)
B1 = 1685000 (P-1 stage 1)
B1 = 1541338 (P-1 stage 1)
B1 = 931423 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 465711 (P-1 stage 1)
B1 = 65537, B2 = 6553700 (P-1 stage 2)
B1 = 279426 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65537 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-04-21T01:38:33+00:00