is 2 9485893 - 1
has 2855539 decimal digits
takes 2.622 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7D6D6BDE94FFAA5Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.132464.1791%18000039600000.15474.2101%3.287165.6872%1.5081%
PrimeNet2640.375262.5000%4000011000000.03923.4998%0.414463.8124%1.3124%
GPU722686.283564.7059%6000014000000.05332.4634%6.336865.5753%0.8694%
Difference-1-3.1511-0.5268%+120000+2560000+0.1014+1.7468%-3.0497+0.1119%+0.1119%

Known prime factors (1 factor, 65.5 bits, 0.00069058% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9485893524680812441188704872065.5082765584707951
3 × 13 × 727 × 97541167
2014-09-17727975411671.27912.13013.9778

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-05-11T00:00:00S00030v4_computers5000050000---0.020--0.806%
2011-07-27T14:46:00James HeinrichQ66001800003960000---0.155--4.210%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-12-06T00:00:00ANONYMOUSv4_computers21255--0.001--
1999-04-23T00:00:00ANONYMOUSv4_computers21264--0.375--
2013-09-04T08:11:00NesowaManual testing264265--0.394--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.841 GHz-days
Estimated T-Level:0.100
DigitsB1CurvesCompleteFacMiss
20110002 / 1000.02098.010%
25500002 / 2800.00799.287%

New Calculation Method

Total ECM effort:0.841 GHz-days
Estimated T-Level:0.100
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020.841


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-05-05T00:00:00ANONYMOUSv4_computers7D6D6BDE94FFAA5B2.622
2003-05-19T00:00:00S00030v4_computers7D6D6BDE94FFAA5B2.622


PRP results:
dateuseridcompidcofactorsres64PRP
2019-09-14T21:45:33mnd927016b
52468081244118870487
7090F1977AF04C__no
2020-12-05T20:23:00tanaydiniMac
52468081244118870487
7090F1977AF04C5Dno


P-1 factor-bounds graph:
B1 = 180000, B2 = 3960000 (P-1 stage 2)
B1 = 180000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
265
264
255
250
260
270
280
290
2100
Last modified: 2020-12-05T20:23:00+00:00