is 2 51690649 - 1
has 15560436 decimal digits
takes 99.026 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
Actual2681.153161.7647 %----1.153161.7647 %
Target27337.005664.3836 %340000550000009.21693.8023 %46.222565.7378 %
Difference-5-35.8525-2.6189 %-340000-55000000-9.2169-3.8023 %-45.0694-3.9731 %

Known prime factors (1 factor, 80.3 bits, 0.00015531% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5169064914674544418244995654900712580.28014194583258419715
5 × 172 × 37 × 107 × 47741 × 51973
2010-02-1447741519737,418.50.13330.2699

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-02-14apocalypsecapn-bulky2580.2801.8900.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-01-04ANONYMOUSv4_computers212532.32000e-5
2000-02-16ANONYMOUSv4_computers212544.64000e-5
2000-04-27ANONYMOUSv4_computers212560.000
2001-05-27ANONYMOUSv4_computers212570.000
2002-03-10ANONYMOUSv4_computers212580.001
2003-11-28apocalypsev4_computers212600.001
2022-04-05LordJuliusManual testing260263
2008-11-30ANONYMOUS2632640.038
2008-12-04bayannebayanne_clv72642650.072
2008-12-06bayannebayanne_clv72652660.145
2008-12-09bayannebayanne_clv72662670.289
2009-04-18dlerick66bob20092672680.578


ECM factoring results:
No ECM results for M51690649


Lucas-Lehmer results:
No L-L results for M51690649


PRP results:
No PRP results for M51690649


CERT results:
No CERT results for M51690649


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