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Find a six-digit multiple of $64$ that consists only of the digits $2$ and $4$.

 Aug 3, 2024
 #1
avatar+1950 
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We just have

 

643,816=244,224

244224(mod64)0

 

244224 works. 

 

Thanks! :)

 Aug 3, 2024
edited by NotThatSmart  Aug 3, 2024

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