1
$\begingroup$

Is it possible to find such integer pair $(a,n)$ that :

$\begin{cases} 5^a+1 \equiv 0 \pmod {3\cdot 2^n-1} \\ 3\cdot 2^{n-1}-1 \equiv 0 \pmod a\\ \end{cases}$

where $n \equiv 3 \pmod 4$

  • 0
    I still wonder every now and then why it was that you wanted to know this.2012-05-13

1 Answers 1