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-daysProbability
Actual274290.002867.5676 %1600000162071910053.19557.8085 %343.198370.1000 %
Target2684.518164.7059 %90000120000000.43763.1757 %4.955765.8267 %
Difference+6+285.4848+2.8617 %+1510000+1608719100+52.7579+4.6328%+338.2426+4.2733 %

Known prime factors:
No known factors for M13192511

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-08-18ANONYMOUSv4_computers1550002053750--0.1533.347%
2021-05-27Dylan DelgadoManual testing5000001625000012--0.8745.912%
2023-10-08nordisweet16_30.8b1416000001600000--0.9483.631%
2023-10-17nordisweet16_30.8b1416000001620719100--65.3112.371%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-05-17ANONYMOUSv4_computers212640.149
2013-05-19lycornManual testing2642650.283
2014-05-26NesowaManual testing2652660.566
2015-07-14NesowaManual testing2662671.133
2017-12-23ANONYMOUSManual testing2672682.266
2018-01-07ramgeisManual testing2682694.532
2021-08-08SRBaseManual testing2692709.063
2021-08-30SRBaseManual testing27027118.13
2021-10-22ANONYMOUSManual testing27127236.25
2022-03-04ANONYMOUSManual testing272274217.5


ECM factoring results:
Total ECM effort:0.621 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.621


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


PRP results:
No PRP results for M13192511


CERT results:
No CERT results for M13192511


P-1 factor-bounds graph:
B1 = 1600000, B2 = 1620719100 (P-1 stage 2)
B1 = 1600000 (P-1 stage 1)
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)
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107
104
105
106
107
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109
1010
TF factor-bounds graph:
274
272
271
270
269
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.19 ~= -16-bit
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280
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Last modified: 2024-03-13T02:15:48+00:00