Month: May 2025

Introduction Primality testing is of fundamental importance to number theory. For numbers $n$ up to about a million,high-school level methods such as trial division by the integers $d$ such that $d \leq \sqrt n$ are simpleand effective. However, they are no match even for $30$-digit numbers. Let us consider the $32$-digit number $n = 10000000000000000000000000000033$.… Continue reading A Primality Test Based on Vieta’s Formulas