is 2 6173767 - 1
has 1858490 decimal digits
takes 1.094 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L525484EF17458A09double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2674.812965.6716%11500022425000.05933.2758%4.872366.7962%1.1245%
PrimeNet2620.099562.9032%260006000000.01473.3452%0.114264.1442%1.2410%
GPU722662.392165.1515%400009000000.02232.4286%2.414465.9978%0.8463%
Difference+1+2.4208+0.5201%+75000+1342500+0.0370+0.8472%+2.4578+0.7983%+0.7983%

Known prime factors (2 factors, 134.4 bits, 0.00217630% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
61737671548163613590083615772167.06912538241349164
22 × 775193 × 4043587
2011-09-1077519340435879.32340.24500.4054
61737671805351029708572166012167.29114621146454900
22 × 52 × 331 × 1451 × 304429
2022-03-1814513044299.23540.00460.0080

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
61737672794978773952201484945804347213161493977741134.360
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-07T00:00:00ANONYMOUSv4_computers2500025000---0.006--0.458%
2011-04-29T21:47:00markrtiny1150002242500---0.059--3.276%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-10-04T00:00:00ANONYMOUSv4_computers21262--0.100--
2022-03-19T22:26:35LordJuliusManual testing262264--0.477--
2022-03-19T22:26:35LordJuliusManual testing264265--0.605--
2022-03-19T22:26:35LordJuliusManual testing265266--1.210--
2022-03-19T22:26:35LordJuliusManual testing266267--2.421--
2022-03-18T07:53:31TJAOIManual testing267268*67.291214.4222.2258.994


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-14T00:00:00ANONYMOUSv4_computers525484EF17458A091.094
2001-02-18T00:00:00ANONYMOUSv4_computers525484EF17458A091.094


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T00:28:11kkmrkkblmbrbkc4.xlarge
154816361359008361577
8BF09B89B51493__no
2018-09-19T05:31:40ANONYMOUS
154816361359008361577
8BF09B89B51493__no
2022-03-24T13:10:27Poaooffice-CN3
154816361359008361577
180535102970857216601
DC69459EA8E75971no


P-1 factor-bounds graph:
B1 = 115000, B2 = 2242500 (P-1 stage 2)
B1 = 115000 (P-1 stage 1)
B1 = 25000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
264
262
250
260
270
280
290
2100
Last modified: 2022-03-24T13:10:27+00:00