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# What is the greatest prime factor of 2^100-2^96? Thanks for

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What is the greatest prime factor of 2^100-2^96? Thanks for  [#permalink]

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27 Oct 2008, 00:40
What is the greatest prime factor of 2^100-2^96?
Laurence

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27 Oct 2008, 01:42
What is the greatest prime factor of 2^100-2^96?

2^96(2^4 - 1) = 2^96( 15).............5 is the greatest factor
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27 Oct 2008, 05:32
yezz wrote:
What is the greatest prime factor of 2^100-2^96?

2^96(2^4 - 1) = 2^96( 15).............5 is the greatest factor

agreed with Yezz
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27 Oct 2008, 23:34
Thanks!
Laurence

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Re: Greatest Factor &nbs [#permalink] 27 Oct 2008, 23:34
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# What is the greatest prime factor of 2^100-2^96? Thanks for

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