is 2 17504153 - 1
has 5269276 decimal digits
takes 9.968 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE654038C3060D16Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273109.279565.7534%10000000100000000052.79329.6989%162.072769.0750%3.3216%
PrimeNet2650.416861.5385%8000024000000.17044.5488%0.587263.2880%1.7495%
GPU722696.820563.7681%12000034000000.24663.3524%7.067164.9827%1.2146%
Difference+4+102.4590+1.9853%+9880000+996600000+52.5466+6.3466%+155.0055+4.0922%+4.0922%

Known prime factors:
No known factors for M17504153

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-02-22T20:26:00Oliver KruseManual testing100000001000000000---52.79--9.699%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-02-11T00:00:00Net_Forcev4_computers21258--0.002--
2001-03-17T00:00:00Net_Forcev4_computers21259--0.004--
2001-11-17T00:00:00Team Prime Ribv4_computers21265--0.417--
2014-03-01T07:01:00NesowaManual testing265266--0.427--
2014-08-30T01:07:00NesowaManual testing266267--0.854--
2018-02-11T22:47:49ramgeisManual testing267268--1.708--
2018-02-11T22:47:49ramgeisManual testing268269--3.415--
2020-04-11T12:39:36lycornManual testing269270--6.831--
2021-09-11T16:21:55SRBaseManual testing270271--13.66--
2021-10-08T19:13:19-Anonymous-Manual testing271272--27.32--
2022-01-11T18:00:39TheJudgerManual testing272273--54.64--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.866 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.866 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03296.826%
25500000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.866


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-08-14T00:00:00ANONYMOUSv4_computersE654038C3060D16E9.97


PRP results:
No PRP results for M17504153


P-1 factor-bounds graph:
B1 = 10000000, B2 = 1000000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
105
106
107
108
105
106
107
108
109
1010
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
259
258
250
260
270
280
290
2100
Last modified: 2022-01-11T18:00:39+00:00