is 2 102812261 - 1
has 30949575 decimal digits
takes 409.357 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
Actual276148.853864.4737%7560002100100010.73263.8949%159.586468.3685%5.8685%
PrimeNet2729.301762.5000%450000220000009.37655.3825%18.678267.8825%5.3825%
GPU72276148.853864.4737%6500002200000010.46823.8534%159.322068.3271%3.8534%
Difference---+106000-999000+0.2644+0.0414%+0.2644+0.0414%+0.0414%

Known prime factors (1 factor, 127.5 bits, 0.00012400% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
10281226123921462614541372322434502805715251137739127.4921163356509324377776422721741608
23 × 3 × 7 × 41 × 6581 × 39541 × 115859 × 400031 × 14004149
400031140041492021-03-101.555e+96.58868.2272

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-03-10T16:34:34BigBrotherManual testing7560002100100039127.49210.73818.721.473.895%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-05-09T00:34:001997rj7compw263264--0.019--
2010-08-20T06:35:00Donna NoblePhenom9550264265--0.036--
2012-04-25T07:43:00Mr-PlonkLinux-i7265266--0.073--
2013-09-06T09:58:00JoDuManual testing266267--0.145--
2013-09-10T22:11:00duklahome267268--0.291--
2013-09-16T07:38:00duklahome268269--0.581--
2013-09-24T00:05:00duklahome269270--1.163--
2013-09-30T19:24:00duklahome270271--2.326--
2014-12-29T08:24:00ANONYMOUSManual testing271272--4.652--
2020-02-08T09:45:10srow7Manual testing272273--9.303--
2020-02-08T09:45:10srow7Manual testing273274--18.61--
2020-10-23T13:37:02ktonyGPU72_TF274275--37.21--
2020-10-24T16:27:04ktonyGPU72_TF275276--74.43--


ECM factoring results:
Exponent "102812261" not found


Lucas-Lehmer results:
Exponent "102812261" not found


PRP results:
Exponent "102812261" not found


P-1 factor-bounds graph:
B1 = 756000, B2 = 21001000 (stage 2)
B1 = 756000 (stage 1)
104
105
106
104
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
2110
2120
2130
Last modified: 2021-03-10T16:34:34+00:00