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Old 2014-09-25, 00:05   #3
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

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Quote:
Originally Posted by Stargate38 View Post
Given that the smallest number with a digit sum of 911 is 3*10^101-1=7*17*461*42703*128060437587372995319339355138356780636701102819820530493717889157422282840645351747588735187, ...
This is completely immaterial ;-) How could you possibly use this?

Quote:
Originally Posted by Stargate38 View Post
find the smallest prime with a digit sum of 911.
That's how the problem should be phrased.
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