is 2 1513529 - 1
has 455618 decimal digits
takes 0.068 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LBA970BECE127C68Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26719.632268.6567 %100000002000000001.31819.7037 %20.950371.6982 %
Target2610.203065.5738 %60002500000.00120.9499 %0.204265.9008 %
Difference+6+19.4293+3.0829 %+9994000+199750000+1.3169+8.7538%+20.7461+5.7974 %

Known prime factors (1 factor, 66.7 bits, 0.00440380% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15135291160090554209104667832166.65338324027957479
11 × 2647 × 1316207987
2015-08-102647131620798716.0824.64468.6746

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-01-27James HeinrichWHS8000013200006--0.0104.431%
2013-11-17David Campeaui5-2500k9450002740500012--0.15510.027%
2015-02-24VictordeHollanderManual testing1000000020000000012--1.31814.703%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-08-08ANONYMOUSv4_computers212580.025
2010-04-04GrunwalderGIMPManual testing212631.054
2015-01-22snme2pm1Manual testing2632653.766


ECM factoring results:
Total ECM effort:31.045 GHz-days
Estimated T-Level:25.718
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.67418.740%
302500000.14486.623%
3510000000.01099.005%


ECM Summary

B1B2factorcurvesGHz-days
50000500000020511.31
500005000000462.565
250000400000005017.17


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-25ANONYMOUSv4_computersBA970BECE127C68B0.068
2015-07-21MadPooManual testingBA970BECE127C68B0.068


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-3
116009055420910466783
383A63069599BD4F
2017-10-29kkmrkkblmbrbkc4.xlarge
116009055420910466783
383A63069599BD4F


CERT results:
No CERT results for M1513529


P-1 factor-bounds graph:
B1 = 10000000, B2 = 200000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 945000, B2 = 27405000 (P-1 stage 2)
B1 = 945000 (P-1 stage 1)
B1 = 80000, B2 = 1320000 (P-1 stage 2)
B1 = 80000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
265
263
258
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.72 ~= 69-bit
250
260
270
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00