is 2 107072687 - 1
has 32232091 decimal digits
takes 439.147 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
Actual276142.930964.4737%7560007560004.49591.5401%147.426865.0208%0.5471%
PrimeNet2728.931662.5000%450000220000009.65865.4085%18.590264.5282%2.0282%
GPU72276142.930964.4737%7000002400000011.71233.9751%154.643265.8859%1.4122%
Difference---+56000-23244000-7.2164-2.4350%-7.2164-0.8651%-0.8651%

Known prime factors (1 factor, 76.3 bits, 0.00007129% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
107072687953526895586881123278012376.336445270835309700
22 × 3 × 52 × 1847 × 2113 × 380309
2021-10-292113380309250.590.13510.2301

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-10-29T19:19:01Jwb52zClay7560007560002376.3364.496878.38.9921.540%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-24T06:55:00sasaki3ssk_saver263264--0.018--
2010-09-06T22:27:00WPSs1264265--0.035--
2012-08-03T11:28:00RMAC9.5Compaq-PIII-933265266--0.070--
2013-10-04T10:08:00ANONYMOUS266267--0.140--
2014-10-31T17:17:00ANONYMOUS267268--0.279--
2014-11-12T15:52:00ANONYMOUS268269--0.558--
2014-11-17T20:27:00kutenssmoothost269270--1.117--
2015-01-28T00:17:00SMoffatManual testing270271--2.233--
2018-02-13T17:57:45el groccoManual testing271272--4.467--
2020-03-20T18:45:10srow7Manual testing272273--8.933--
2020-03-20T18:45:10srow7Manual testing273274--17.87--
2021-04-08T18:21:33TheJudgerManual testing274275--35.73--
2021-04-08T18:21:33TheJudgerManual testing275276--71.47--


ECM factoring results:
No ECM results for M107072687


Lucas-Lehmer results:
No L-L results for M107072687


PRP results:
No PRP results for M107072687


P-1 factor-bounds graph:
B1 = 756000 (P-1 stage 1)
102
103
104
105
106
102
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: 2021-10-29T19:19:01+00:00