is 2 52894279 - 1
has 15922765 decimal digits
takes 101.332 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
Actual2692.257162.3188 %----2.257162.3188 %
Target27336.163564.3836 %3600006000000010.02613.9106 %46.189765.7764 %
Difference-4-33.9065-2.0647 %-360000-60000000-10.0261-3.9106 %-43.9326-3.4575 %

Known prime factors (1 factor, 98.8 bits, 0.00018674% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
528942795424603753116149144013307885773098.7755127779275634089977872
24 × 853 × 13799 × 14683 × 23269 × 79693
2011-08-2523269796931.994e+90.07320.1315

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-08-25S485122USB-Z3098.7751.7080.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01ANONYMOUSv4_computers212532.27000e-5
2000-02-23ANONYMOUSv4_computers212544.54000e-5
2000-05-10ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-06-02ANONYMOUSv4_computers212580.001
2004-03-261997rj7v4_computers212600.001
2008-08-26ANONYMOUSv4_computers212630.019
2008-11-30DerekManual testing212640.037
2009-02-14Boro Park, Brooklynalnilam2642650.071
2009-02-15Boro Park, Brooklynalnilam2652660.141
2009-02-17Boro Park, Brooklynalnilam2662670.283
2009-04-23yukiyuki-42672680.565
2010-04-05TDH-DXLmarrina2682691.130


ECM factoring results:
No ECM results for M52894279


Lucas-Lehmer results:
No L-L results for M52894279


PRP results:
No PRP results for M52894279


CERT results:
No CERT results for M52894279


P-1 factor-bounds graph:
103
104
105
103
104
105
TF factor-bounds graph:
269
268
267
266
265
264
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00