is 2 13192511 - 1
has 3971342 decimal digits
takes 5.389 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8F2314D6635C7150double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual274290.002867.5676%500000162500000.80443.2983%290.807268.6373%1.0697%
PrimeNet2640.269862.5000%6000017000000.08854.3464%0.358364.1299%1.6299%
GPU722684.518164.7059%9000024000000.12783.1757%4.645965.8267%1.1208%
Difference+6+285.4848+2.8617%+410000+13850000+0.6765+0.1226%+286.1613+2.8106%+2.8106%

Known prime factors:
No known factors for M13192511

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-08-18T00:00:00ANONYMOUSv4_computers1550002053750---0.153--1.677%
2021-05-27T01:54:09Dylan DelgadoManual testing5000001625000012---0.804--3.298%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-05-17T00:00:00ANONYMOUSv4_computers21264--0.270--
2013-05-19T20:08:00lycornManual testing264265--0.283--
2014-05-26T11:16:00NesowaManual testing265266--0.566--
2015-07-14T13:29:00NesowaManual testing266267--1.133--
2017-12-23T00:04:57-Anonymous-Manual testing267268--2.266--
2018-01-07T23:32:17ramgeisManual testing268269--4.532--
2021-08-08T08:37:48SRBaseManual testing269270--9.063--
2021-08-30T16:27:35SRBaseManual testing270271--18.13--
2021-10-22T19:00:48-Anonymous-Manual testing271272--36.25--
2022-03-04T20:00:00-Anonymous-Manual testing272273--72.50--
2022-03-04T20:00:00-Anonymous-Manual testing273274--145.0--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.621 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.621 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.621


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-09-30T00:00:00ANONYMOUSv4_computers8F2314D6635C71505.389
2005-02-18T00:00:00Sturle Sundev4_computers8F2314D6635C71505.389


PRP results:
No PRP results for M13192511


P-1 factor-bounds graph:
B1 = 500000, B2 = 16250000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 155000, B2 = 2053750 (P-1 stage 2)
B1 = 155000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2022-03-04T20:00:00+00:00