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GCF (HCF) of 6 and 4

"Greatest Common Factor" Calculator

What is the Greatest Common Divisor of 6 and 4?

Answer

GCF (HCF) of 6 and 4 is

2

Common factors: 1, 2

2 divides both: 6 ÷ 2 = 3, 4 ÷ 2 = 2 — and 3 and 2 share no factor but 1, so no larger number divides both.

6 = 2 × 3

4 = 2²

Prime	6	4	Lowest power
2	2	2²	2
3	3	—	—

— = power 0: the prime is not a factor of this number, so it cannot be in the GCF.

GCF = 2

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See Also

Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers

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What is the GCF (HCF) of 6 and 4. The GCF of 6 and 4 is 2 — the biggest number that can divide both integers. Step-by-step GCF (GCD) calculation by factoring.

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GCF Table

Number 1	Number 2	GCF
6	2	2
6	4	2
6	5	1
6	7	1
6	8	2
6	9	3
6	10	2
6	11	1
6	12	6
6	13	1
6	14	2
6	15	3
6	16	2
6	17	1
6	18	6
6	20	2
6	21	3
6	24	6
6	25	1
6	26	2
6	27	3
6	29	1
6	30	6
6	32	2
6	33	3
6	35	1
6	36	6
6	37	1
6	39	3
6	40	2

FAQ

What is the Greatest Common Divisor of 6 and 4?

GCF (HCF) of 6 and 4 is 2

How to find the GCF of 6 and 4?

You can find the GCF of 6 and 4 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 6 and 4 is 2.

What prime factors do 6 and 4 share?

The prime factorizations of 6 and 4 have 2 in common, and multiplying those shared primes gives 2 — exactly the greatest common factor.

How does the GCF reduce the fraction 6/4?

Divide the numerator and the denominator by the GCF 2: 6 ÷ 2 = 3 and 4 ÷ 2 = 2. So 6/4 in lowest terms is 3/2.