so we have that a=2 is a misleader

and the question is 1. let p>5 be prime and let n= 4^(p)+1/5 show that n is an integer

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- Mar 26th 2012, 09:28 AMjojodecoshow that n is an integer number thoery problem
so we have that a=2 is a misleader

and the question is 1. let p>5 be prime and let n= 4^(p)+1/5 show that n is an integer - Mar 26th 2012, 10:12 AMSylvia104Re: Show that n is an integer [number theory problem]
$\displaystyle 4^p+1$ is divisible by $\displaystyle 5$ for any odd positive integer $\displaystyle p,$ not just odd primes. Hint: $\displaystyle 4^p+1=(5-1)^p+1.$