is 2 52043291 - 1
has 15666592 decimal digits
takes 99.701 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
Actual2692.294062.3188 %----2.294062.3188 %
Target27336.754964.3836 %340000550000009.21693.8056 %45.971865.7390 %
Difference-4-34.4609-2.0647 %-340000-55000000-9.2169-3.8056 %-43.6778-3.4201 %

Known prime factors (1 factor, 72.4 bits, 0.00013920% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5204329164353979208763844674792272.44761827353701329
3 × 31 × 719 × 17167 × 53861
2011-02-02171675386121.9920.05320.0971

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-02-02ArtfulDodgerDodger-22272.4471.5830.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-01-04ANONYMOUSv4_computers212532.31000e-5
2000-02-23ANONYMOUSv4_computers212544.61000e-5
2000-04-27ANONYMOUSv4_computers212560.000
2001-04-15ANONYMOUSv4_computers212570.000
2002-03-31ANONYMOUSv4_computers212580.001
2003-11-081997rj7v4_computers212590.001
2004-01-271997rj7v4_computers212600.001
2006-10-24ANONYMOUSv4_computers212630.019
2008-10-16DerekManual testing212640.036
2008-12-05Sturle Sundemumbai.ifi2642650.072
2009-02-04Aldo CorsaPolifemo2652660.144
2009-02-05Aldo CorsaPolifemo2662670.287
2009-06-19SAHS Science DeptChem_032672680.574
2010-03-24arnaudSRV-3302682691.149


ECM factoring results:
No ECM results for M52043291


Lucas-Lehmer results:
No L-L results for M52043291


PRP results:
No PRP results for M52043291


CERT results:
No CERT results for M52043291


P-1 factor-bounds graph:
103
104
105
103
104
105
TF factor-bounds graph:
269
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00