Hybrid bounds for prime divisorsLet $x$ and $n$ be positive integers. We prove a non-trivial lower bound for $x$, dependant only on $ω_n$, the number of distinct prime factors of $x^n-1$. By considering the divisibility of $φ\mid x^n-1$ for $φ\mid n$, we obtain a further refinement. This bound has applications for existence problems relating to primitive elements in finite fields.
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