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Topic: when does ax+b | 2^2x+1
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Angela Richardson

Posts: 42
From: UK
Registered: 6/22/11
when does ax+b | 2^2x+1
Posted: Oct 22, 2011 2:00 AM
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2x+1 | 2^(2x) -1
proof: 2^(2x) -1=(2^x)^2 -1=(2^x +1)(2^x -1)=(2^x
Are there any values of a and b where ax+b | 2^(2x)-1 for all positive integers
x apart from the case where b=1? 

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