is 2 17779067 - 1
has 5352033 decimal digits
takes 10.816 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L60FAE2953F73D648double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.671362.6866%20000022500000.27494.1002%1.946264.2165%1.5299%
PrimeNet2650.410461.5385%8000024000000.18214.5587%0.592463.2918%1.7533%
GPU722696.715063.7681%13000034000000.27183.4058%6.986865.0021%1.2340%
Difference-2-5.0437-1.0815%+70000-1150000+0.0031+0.6944%-5.0406-0.7856%-0.7856%

Known prime factors (1 factor, 75.0 bits, 0.00042198% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17779067384270500966638578850972375.0251080682414230844
22 × 347 × 778589635613
2017-09-26347778589635613520.1937,41869,886

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-04-27T00:00:00ANONYMOUSv4_computers2000002250000---0.275--4.100%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-21T00:00:00ANONYMOUSv4_computers21253--6.74908e-5--
2001-02-18T00:00:00Net_Forcev4_computers21258--0.002--
2001-03-11T00:00:00Net_Forcev4_computers21259--0.004--
2001-10-13T00:00:00korvav4_computers21265--0.410--
2016-03-19T23:24:22Mark RoseManual testing265266--0.420--
2014-08-23T13:19:00NesowaManual testing266267--0.841--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.925 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.925 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.925


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-05-19T00:00:00ANONYMOUSv4_computers2E1D286AAB72F7__10.82
2004-02-07T00:00:00curtiscv4_computers60FAE2953F73D64810.82
2007-02-20T00:00:00Team Prime Ribv4_computers60FAE2953F73D64810.82


PRP results:
No PRP results for M17779067


P-1 factor-bounds graph:
B1 = 200000, B2 = 2250000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
266
265
259
258
253
250
260
270
280
290
2100
Last modified: 2017-09-26T16:25:03+00:00