is 2 101487979 - 1
has 30550926 decimal digits
takes 404.084 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
Actual276150.796164.4737%7160007160004.13371.4920%154.929865.9656%3.4656%
PrimeNet2729.423162.5000%400000200000008.47445.2084%17.897667.7084%5.2084%
GPU72276150.796164.4737%6500002200000010.46823.8474%161.264368.3210%3.8474%
Difference---+66000-21284000-6.3345-2.3554%-6.3345-2.3554%-2.3554%

Known prime factors (1 factor, 78.9 bits, 0.00007773% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1014879795582631412887298726777132478.8852750390473775864
23 × 17 × 1913 × 19997 × 528659
199975286592020-12-08843.940.27540.3106

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-12-08T18:43:56DRobinsonPEA8-96007160007160002478.8854.134808.28.2671.492%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-03-21T22:13:001997rj7Manual testing263264--0.019--
2010-08-13T22:44:00Donna NoblePH9500264265--0.037--
2012-04-16T04:12:00tscc02265266--0.074--
2013-08-26T14:08:00RobishManual testing266267--0.147--
2013-08-26T20:16:00RobishManual testing267268--0.295--
2013-08-29T13:19:00CSLatDDtmsm8-32268269--0.589--
2013-09-02T12:44:00SMoffatManual testing269270--1.178--
2013-09-05T00:53:00SMoffatManual testing270271--2.356--
2014-12-02T07:01:00shaugeManual testing271272--4.712--
2020-03-23T16:21:02el groccoGPU72_TF272273--9.425--
2020-03-30T14:58:56SRBaseManual testing273274--18.85--
2020-10-10T18:25:10TheJudgerManual testing274275--37.70--
2020-10-10T18:25:10TheJudgerManual testing275276--75.40--


ECM factoring results:
Exponent "101487979" not found


Lucas-Lehmer results:
Exponent "101487979" not found


PRP results:
Exponent "101487979" not found


P-1 factor-bounds graph:
B1 = 716000 (stage 1)
103
104
105
106
103
104
105
106
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: 2020-12-08T18:43:56+00:00