Prime Factorization of 42

"Prime Factorization" Calculator
Prime Factors of

What is the Prime Factorization of 42?

Answer

Prime Factors of 42:
2, 3, 7

42 = 2 × 3 × 7 · composite · 8 factors

Division ladder

422
213
77
1

Left: what is left; right: the smallest prime that divides it; 1 at the bottom.

Second way — factor tree
4222137

See Also

FAQ

What is the Prime Factorization of 42?

Prime Factors of 42: 2, 3, 7

How many prime factors does 42 have?

Number 42 has 3 prime factors, all different.

How can you check the prime factorization of 42?

Multiply the factors back together: 2 × 3 × 7 = 42. Every factor is prime, so nothing splits any further and this decomposition is the only one that exists.