Mathematics, 14.09.2019 04:30 imamador6396
If 2^n + 1 is an odd prime for some integer n, prove that n is a power of 2. (h
Answers: 2
is an odd prime but n is not a power of 2. Then, there exists an odd prime number p such that 
. Then, for some integer 
,
and an odd positive number 
,
.
we have that 
is not a prime number, which is a contradiction.
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If 2^n + 1 is an odd prime for some integer n, prove that n is a power of 2. (h...
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