is 2 107652749 - 1
has 32406707 decimal digits
takes 441.526 GHz-days to do one PRP 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
Actual276142.160764.4737%5500000550000032.70863.2041%174.869367.6778%5.1778%
PrimeNet2728.883562.5000%450000220000009.65865.4119%18.542167.9119%5.4119%
GPU72276142.160764.4737%7000002400000011.71233.9777%153.873168.4514%3.9777%
Difference---+4800000-18500000+20.9962-0.7736%+20.9962-0.7736%-0.7736%

Known prime factors (1 factor, 87.5 bits, 0.00008124% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1076527492129724620856419217919444332787.461989164067169533784
23 × 3 × 269 × 3904249 × 39243461
3904249392434612021-02-14300,22334.66947.254

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-02-14T16:58:45rucioManual testing550000055000002787.46132.71883.165.423.204%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-30T23:39:00RichardFX5000_1263264--0.018--
2010-09-08T17:51:00DerekBasement264265--0.035--
2012-05-19T21:57:00firereddont1265266--0.069--
2015-04-26T22:15:00Mihai PredaManual testing266267--0.139--
2015-05-04T23:46:00Mihai PredaManual testing267268--0.278--
2015-05-10T12:18:00Mihai PredaManual testing268269--0.555--
2015-06-11T19:10:00SMoffatManual testing269270--1.111--
2015-07-08T01:22:00SMoffatManual testing270271--2.221--
2019-01-23T17:52:18Niels_Mache_NextcloudManual testing271272--4.443--
2020-03-01T22:51:58el groccoManual testing272273--8.885--
2020-03-03T15:56:35Niels_Mache_NextcloudManual testing272273--8.885--
2020-03-03T15:56:35Niels_Mache_NextcloudManual testing273274--17.77--
2020-11-01T11:21:03ktonyGPU72_TF274275--35.54--
2021-01-21T02:34:11Jon PaceManual testing275276--71.08--


ECM factoring results:
Exponent "107652749" not found


Lucas-Lehmer results:
Exponent "107652749" not found


PRP results:
Exponent "107652749" not found


P-1 factor-bounds graph:
B1 = 5500000 (stage 1)
105
106
107
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2021-02-14T16:58:45+00:00