is 2 52877389 - 1
has 15917681 decimal digits
takes 101.299 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
Actual2681.127261.7647 %----1.127261.7647 %
Target27336.175164.3836 %3600006000000010.02613.9104 %46.201265.7763 %
Difference-5-35.0479-2.6189 %-360000-60000000-10.0261-3.9104 %-45.0740-4.0116 %

Known prime factors (1 factor, 83.6 bits, 0.00015804% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
52877389143078448936237413666910232683.565135292656882356099
7 × 10973 × 396667 × 4440427
2010-08-25396667444042768,3121.71392.2425

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-08-25Wojciech Florekarmada42683.5654.8510.000%


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
2008-08-07ANONYMOUSv4_computers212630.019
2008-11-19DerekManual testing212640.036
2008-12-31trifbrownie2642650.071
2009-01-19trifbrownie2652660.141
2009-02-20trifbrownie2662670.283
2009-04-24kvizbarHome2672680.565


ECM factoring results:
No ECM results for M52877389


Lucas-Lehmer results:
No L-L results for M52877389


PRP results:
No PRP results for M52877389


CERT results:
No CERT results for M52877389


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
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
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00