is 2 50716889 - 1
has 15267305 decimal digits
takes 92.911 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
Actual2670.585961.1940 %----0.585961.1940 %
Target27337.716164.3836 %340000550000008.81373.7930 %46.529965.7345 %
Difference-6-37.1302-3.1895 %-340000-55000000-8.8137-3.7930 %-45.9440-4.5405 %

Known prime factors (1 factor, 78.4 bits, 0.00015464% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
507168894061541596787668502936012478.4264004131243921200
24 × 32 × 52 × 7 × 101 × 109 × 2269 × 6361
2009-03-27226963612,194.60.00660.0123

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-03-27Sturle Sundekaufman.ifi2478.4261.8900.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212532.37000e-5
2000-02-09ANONYMOUSv4_computers212544.73000e-5
2000-04-19ANONYMOUSv4_computers212560.000
2001-04-21ANONYMOUSv4_computers212570.000
2002-01-15ANONYMOUSv4_computers212580.001
2003-08-25ANONYMOUSv4_computers212590.001
2003-11-08ANONYMOUSv4_computers212600.002
2008-09-15DerekManual testing212640.037
2009-02-06Jud McCraniePinko2642650.074
2009-02-08Trace McVeraAetherBox2652660.147
2009-02-10Trace McVeraAetherBox2662670.295


ECM factoring results:
No ECM results for M50716889


Lucas-Lehmer results:
No L-L results for M50716889


PRP results:
No PRP results for M50716889


CERT results:
No CERT results for M50716889


P-1 factor-bounds graph:
102
103
104
102
103
104
TF factor-bounds graph:
267
266
265
264
260
259
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