is 2 205000013 - 1
has 61711154 decimal digits
takes 1,749.262 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27418.662862.1622 %1300000130000016.08472.6070 %34.747463.1486 %
Target279597.235064.5570 %1300000250000000183.73484.0143 %780.969965.9798 %
Difference-5-578.5723-2.3948 %--248700000-167.6501-1.4073 %-746.2224-2.8312 %

Known prime factors (1 factor, 83.1 bits, 0.00004056% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
205000013106930662395950632352531512683.14526080647710971275
32 × 52 × 2393 × 54787 × 884129
2021-04-11547878841299,555.81.23691.3796

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-04-11KrieselManual testing1300000130000012683.14516.181.522%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-01Rob_Deetwopc2642650.018
2013-07-27tscnewhp2652660.036
2014-08-18NRManual testing2662680.219
2014-08-18NRManual testing2682690.292
2014-08-18NRManual testing2692700.583
2014-08-18NRManual testing2702711.166
2014-08-18NRManual testing2712722.333
2014-08-18NRManual testing2722734.666
2014-08-18NRManual testing2732749.332


ECM factoring results:
No ECM results for M205000013


Lucas-Lehmer results:
No L-L results for M205000013


PRP results:
No PRP results for M205000013


CERT results:
No CERT results for M205000013


P-1 factor-bounds graph:
B1 = 1300000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
274
273
272
271
270
269
268
266
265
this exponent TF target: 79
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00