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Old 2007-06-07, 17:44   #1
davar55
 
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Default Initial Pattern

Find a power of 2 whose decimal representation
begins with the pattern 123454321.
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Old 2007-06-07, 18:01   #2
fetofs
 
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Hard...
2^70279608 = 123454321...256?

Last fiddled with by fetofs on 2007-06-07 at 18:03
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Old 2007-06-07, 18:12   #3
wblipp
 
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Easy ;)

2^(-3.017950762) = 0.123454321... :)

Last fiddled with by wblipp on 2007-06-07 at 18:13 Reason: add winky
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Old 2007-06-07, 18:12   #4
davar55
 
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Yes, that's the value that my source for the problem gave.
Well done.
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Old 2007-06-07, 18:15   #5
fetofs
 
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Technically, it begins with a zero and a dot

How did you find out that value wblipp?

Last fiddled with by fetofs on 2007-06-07 at 18:16
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Old 2007-06-07, 19:13   #6
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I'm not wblipp but,

log 0.123454321/log 2
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Old 2007-06-12, 00:00   #7
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