Question

what is the prime factorisation of 42?​

Answer 1

Answer:

The only way to write 42 as the product of primes (except to change the order of the factors) is 2 × 3 × 7. We call 2 × 3 × 7 the prime factorization of 42. It turns out that every counting number (natural number) has a unique prime factorization, different from any other counting number.

Answer 2

2×3×7 = 42

so, prime factorisation of 42 is 2×3×7 ( all are prime numbers)

hope this will help you ..