is 2 18305533 - 1
has 5510515 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-L7AFE41EA6D14615Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273104.495465.7534%33000087450000.69553.1555%105.190966.8341%1.0807%
PrimeNet2650.398661.5385%8000026000000.19174.6523%0.590263.3278%1.7893%
GPU722696.521963.7681%13000036000000.28143.4617%6.803365.0224%1.2543%
Difference+4+97.9735+1.9853%+200000+5145000+0.4141-0.3062%+98.3876+1.8117%+1.8117%

Known prime factors:
No known factors for M18305533

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-03-07T00:00:00Nick Craig-Woodv4_computers265000265000---0.234--1.020%
2019-03-13T17:30:58harleei5-5250U_1600330000874500012---0.695--3.156%


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--
2001-12-08T00:00:00ANONYMOUSv4_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)
2003-05-11T00:00:00Nick Craig-Woodv4_computers7AFE41EA6D14615F11.14
2006-11-28T00:00:00Dustyv4_computers7AFE41EA6D14615F11.14


PRP results:
No PRP results for M18305533


P-1 factor-bounds graph:
B1 = 330000, B2 = 8745000 (P-1 stage 2)
B1 = 330000 (P-1 stage 1)
B1 = 265000 (P-1 stage 1)
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104
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107
TF factor-bounds graph:
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Last modified: 2021-05-30T10:54:55+00:00