is 2 54954161 - 1
has 16542851 decimal digits
takes 116.472 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
Actual2681.084661.7647 %----1.084661.7647 %
Target27334.808064.3836 %3600006000000011.09223.9297 %45.900265.7832 %
Difference-5-33.7234-2.6189 %-360000-60000000-11.0922-3.9297 %-44.8156-4.0185 %

Known prime factors (1 factor, 90.1 bits, 0.00016393% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5495416113138734090377103801679782732890.08611954266839209048976
24 × 32 × 41 × 1013 × 1061 × 1279 × 1472927
2011-09-05127914729276,850,0900.25030.4606

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-09-05Scott CrawfordPhenomX62890.0864.7900.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.18000e-5
2000-03-01ANONYMOUSv4_computers212544.37000e-5
2000-06-11ANONYMOUSv4_computers212560.000
2001-08-26ANONYMOUSv4_computers212570.000
2002-10-12ANONYMOUSv4_computers212580.001
2003-11-08oerwinv4_computers212620.006
2008-07-29ANONYMOUSManual testing212630.018
2009-03-01xorberampage2632640.036
2009-03-03arnaudSRV-1402642650.068
2009-03-07arnaudSRV-1402652670.408
2009-08-04Sturle Sundevancraft.ifi2672680.544


ECM factoring results:
No ECM results for M54954161


Lucas-Lehmer results:
No L-L results for M54954161


PRP results:
No PRP results for M54954161


CERT results:
No CERT results for M54954161


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
268
267
265
264
263
262
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