is 2 55954963 - 1
has 16844123 decimal digits
takes 118.593 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
Actual27217.091163.8889 %----17.091163.8889 %
Target27334.185464.3836 %3600006000000011.09223.9387 %45.277765.7864 %
Difference-1-17.0943-0.4947 %-360000-60000000-11.0922-3.9387 %-28.1865-1.8975 %

Known prime factors (1 factor, 83.5 bits, 0.00014921% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
55954963136024131243540224885586792683.492121547869885590153
3 × 179 × 443 × 4931 × 103617793
2012-06-24493110361779360,72017.36432.404

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-06-24TheJudgerManual testing2683.4922.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.14000e-5
2000-03-01ANONYMOUSv4_computers212544.29000e-5
2000-06-11ANONYMOUSv4_computers212560.000
2001-09-22ANONYMOUSv4_computers212570.000
2002-08-24ANONYMOUSv4_computers212580.001
2022-06-14LordJuliusManual testing21263
2008-12-251997rj7compa2632640.035
2009-01-18ANONYMOUS2642650.067
2009-02-14ANONYMOUS2652660.134
2009-02-19S04803lfmcal2662670.267
2009-11-19Carlos "casep" Sepulvedafirewall2672680.534
2011-04-12SpielauerC686F64702682691.068
2011-06-07SAHS Physics ClubPhysics_Club_12692702.137
2011-09-20dmaineManual testing2702714.274
2012-06-21Jerry HallettManual testing2712728.547


ECM factoring results:
No ECM results for M55954963


Lucas-Lehmer results:
No L-L results for M55954963


PRP results:
No PRP results for M55954963


CERT results:
No CERT results for M55954963


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
108
109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00