is 2 18305459 - 1
has 5510493 decimal digits
takes 11.136 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L45EEAA1780E9FFCAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273104.495865.7534%22000052800000.43722.6483%104.933166.6604%0.9069%
PrimeNet2650.398661.5385%8000026000000.19174.6523%0.590263.3278%1.7893%
GPU722696.521963.7681%13000036000000.28143.4617%6.803465.0224%1.2543%
Difference+4+97.9739+1.9853%+90000+1680000+0.1558-0.8135%+98.1297+1.6380%+1.6380%

Known prime factors:
No known factors for M18305459

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-02-27T00:00:00Team Prime Ribv4_computers2200005280000---0.437--2.648%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-10-25T00:00:00Net_Forcev4_computers21258--0.002--
2001-11-24T00:00:00Net_Forcev4_computers21259--0.004--
2002-03-10T00:00:00ANONYMOUSv4_computers21266--0.807--
2014-08-13T03:09:00NesowaManual testing266267--0.816--
2017-09-14T08:54:46ramgeisManual testing267268--1.633--
2017-09-14T08:54:46ramgeisManual testing268269--3.266--
2020-02-23T21:55:16lycornManual testing269270--6.532--
2021-05-29T11:31:08-Anonymous-Manual testing270271--13.06--
2021-05-29T11:31:08-Anonymous-Manual testing271272--26.13--
2021-05-30T10:54:55-Anonymous-Manual testing272273--52.25--


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)
2003-03-16T00:00:00Team Prime Ribv4_computers45EEAA1780E9FFCA11.14
2006-11-28T00:00:00ANONYMOUSv4_computers45EEAA1780E9FFCA11.14


PRP results:
No PRP results for M18305459


P-1 factor-bounds graph:
B1 = 220000, B2 = 5280000 (P-1 stage 2)
B1 = 220000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
273
272
271
270
269
268
267
266
259
258
250
260
270
280
290
2100
Last modified: 2021-05-30T10:54:55+00:00