is 2 52840889 - 1
has 15906693 decimal digits
takes 101.229 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
Actual2692.259462.3188 %----2.259462.3188 %
Target27336.200164.3836 %3600006000000010.02613.9101 %46.226265.7762 %
Difference-4-33.9407-2.0647 %-360000-60000000-10.0261-3.9101 %-43.9669-3.4574 %

Known prime factors (1 factor, 75.3 bits, 0.00014248% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
52840889461755345651845617620792375.290436929955561351
72 × 137 × 46993 × 1385039
2011-04-16469931385039266.150.33300.3915

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-04-16Eric LandquistLY2262375.2904.3610.000%


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
2002-05-25ANONYMOUSv4_computers212580.001
2004-03-261997rj7v4_computers212600.001
2008-07-04ANONYMOUSv4_computers212630.019
2008-11-19DerekManual testing212640.036
2008-12-13Eddie Bteststar2642650.071
2008-12-15Eddie Bteststar2652660.141
2008-12-18Eddie Bteststar2662670.283
2009-04-26raymondfrtf0212672680.566
2010-04-02Tommy BoucherSidney2682691.131


ECM factoring results:
No ECM results for M52840889


Lucas-Lehmer results:
No L-L results for M52840889


PRP results:
No PRP results for M52840889


CERT results:
No CERT results for M52840889


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
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
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Last modified: 2024-03-13T02:15:48+00:00