is 287705131-1
has 26,401,876 decimal digits
takes 295.680 GHz-days to do one L-L 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
Actual276174.493764.4737%755,00018,120,0008.31563.7115%182.809368.1852%6.2133%
PrimeNet2715.451061.9718%360,00017,000,0006.19165.4015%11.642667.3733%5.4015%
GPU7227587.245864.0000%600,00020,000,0008.09994.0444%95.345768.0444%4.0444%
Difference+1+87.2479+0.4737%+155,000-1,880,000+0.2157-0.3329%+87.4636+0.1408%+0.1408%

Known prime factors (2 factors, 218.9 bits, 0.00024958% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
8770513134319728051680350733581492812891.47119565404931485907440
24 × 5 × 313 × 4079 × 78193 × 2449813
78,1932,449,8132018-05-185,841,6401.01391.2186
8770513122822602144296650546831002247088237721739127.4241301098458213160330769644608768
28 × 3 × 112 × 43 × 997 × 28753 × 84307 × 125627 × 1072433
125,6271,072,4332018-05-181.547e+90.86631.2498

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
8770513178326549902395788154853121399721863321557974714811
2498676839330977
66218.895
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-05-18T16:17:19tServoManual testing755,00018,120,000666218.8958.316591.416.633.711%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-17T20:20:00For Researchm1_64264265--0.043--
2013-03-07T10:32:00saffaManual testing265266--0.085--
2013-03-10T17:31:00Charles A. Morrischandra266267--0.170--
2013-06-20T19:44:00ANONYMOUSDaedalus267268--0.341--
2013-06-22T09:43:00ANONYMOUSDaedalus268269--0.682--
2013-06-23T19:01:00ANONYMOUSDaedalus269270--1.363--
2013-09-23T15:58:00PEDManual testing270271--2.726--
2017-06-24T02:26:05Sid & AndyManual testing271272--5.453--
2017-06-24T02:26:05Sid & AndyManual testing272273--10.91--
2017-06-28T20:12:01gcardonaManual testing273274--21.81--
2018-05-15T15:29:43Andrew BManual testing274275--43.62--
2018-05-15T15:29:43Andrew BManual testing275276--87.25--


ECM factoring results:
Exponent "87705131" not found


Lucas-Lehmer results:
Exponent "87705131" not found


PRP results:
Exponent "87705131" not found


P-1 factor-bounds graph:
B1 = 755,000, B2 = 18,120,000 (stage 2)
B1 = 755,000 (stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2018-05-18T16:17:19+00:00