is 2 53405983 - 1
has 16076803 decimal digits
takes 102.312 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
Actual2681.116161.7647 %----1.116161.7647 %
Target27335.817064.3836 %3600006000000010.02613.9154 %45.843265.7781 %
Difference-5-34.7010-2.6189 %-360000-60000000-10.0261-3.9154 %-44.7271-4.0134 %

Known prime factors (1 factor, 69.2 bits, 0.00012960% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
534059836843815799850470983512169.2136407349341225
52 × 7 × 17 × 4201 × 512671
2010-11-1842015126713.98240.08860.1449

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-11-18Xyzzy1b2169.2131.7360.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-08ANONYMOUSv4_computers212532.25000e-5
2000-03-01ANONYMOUSv4_computers212544.49000e-5
2000-05-24ANONYMOUSv4_computers212560.000
2001-08-04ANONYMOUSv4_computers212570.000
2002-07-06ANONYMOUSv4_computers212580.001
2004-05-111997rj7v4_computers212600.001
2007-10-171997rj7v4_computers212630.018
2008-10-14ANONYMOUSManual testing212640.035
2008-12-17SAHS Math Dept2642650.070
2008-12-24SAHS Math Dept2652660.140
2008-12-27SAHS Math Dept2662670.280
2009-04-29Sturle Sundechuchunge.ifi2672680.560


ECM factoring results:
No ECM results for M53405983


Lucas-Lehmer results:
No L-L results for M53405983


PRP results:
No PRP results for M53405983


CERT results:
No CERT results for M53405983


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
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
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Last modified: 2024-03-13T02:15:48+00:00