Find all factors, prime factors, and prime factorisation of any integer. Determine if a number is prime.
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Factorisation (or factoring) is writing a number as a product of its factors. Every integer > 1 has a unique prime factorisation (Fundamental Theorem of Arithmetic).
A prime number has exactly 2 factors: 1 and itself. Primes up to 100: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.