is 2 51062197 - 1
has 15371253 decimal digits
takes 93.543 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
Actual2681.167361.7647 %----1.167361.7647 %
Target27337.461164.3836 %340000550000008.81373.7963 %46.274865.7357 %
Difference-5-36.2938-2.6189 %-340000-55000000-8.8137-3.7963 %-45.1075-3.9710 %

Known prime factors (1 factor, 69.5 bits, 0.00013604% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
510621978137264773561502419112169.4637967993204015
5 × 13 × 7759 × 15799009
2009-07-247759157990093.93712.30604.2705

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-24S36049Wolle52169.4634.5440.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212532.35000e-5
2000-02-16ANONYMOUSv4_computers212544.70000e-5
2000-04-05ANONYMOUSv4_computers212560.000
2001-04-15ANONYMOUSv4_computers212570.000
2001-10-25ANONYMOUSv4_computers212580.001
2003-10-14apocalypsev4_computers212600.002
2022-04-05LordJuliusManual testing260263
2008-11-27cnaTb_xo4yManual testing2632640.038
2008-12-01Lars FrickeM20082642650.073
2008-12-03ANONYMOUS2652660.146
2008-12-04HighPriceRanchRanchPrimeab2662670.293
2009-04-20arnaudSRV-3302672680.585


ECM factoring results:
No ECM results for M51062197


Lucas-Lehmer results:
No L-L results for M51062197


PRP results:
No PRP results for M51062197


CERT results:
No CERT results for M51062197


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
108
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