GCF (HCF) of 2 and 28

"Greatest Common Factor" Calculator

What is the Greatest Common Divisor of 2 and 28?

Answer

GCF (HCF) of 2 and 28 is

Common factors: 1, 2

2 divides 28 (28 ÷ 2 = 14), so the GCF is the smaller number itself.

2 — prime

28 = 2² × 7

Prime	2	28	Lowest power
2	2	2²	2
7	—	7	—

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

GCF = 2

More with these numbers

Related Calculations

GCF Table

Number 1	Number 2	GCF
2	6	2
2	7	1
2	8	2
2	9	1
2	10	2
2	12	2
2	13	1
2	14	2
2	15	1
2	18	2
2	20	2
2	21	1
2	22	2
2	24	2
2	25	1
2	26	2
2	27	1
2	28	2
2	30	2
2	31	1
2	34	2
2	36	2
2	41	1
2	43	1
2	48	2
2	49	1
2	54	2
2	55	1
2	58	2
2	72	2

FAQ

What is the Greatest Common Divisor of 2 and 28?

GCF (HCF) of 2 and 28 is 2

How to find the GCF of 2 and 28?

You can find the GCF of 2 and 28 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 2 and 28 is 2.

What prime factors do 2 and 28 share?

The prime factorizations of 2 and 28 have 2 in common, and multiplying those shared primes gives 2 — exactly the greatest common factor.

How does the GCF reduce the fraction 2/28?

Divide the numerator and the denominator by the GCF 2: 2 ÷ 2 = 1 and 28 ÷ 2 = 14. So 2/28 in lowest terms is 1/14.

GCF (HCF) of 2 and 28

What is the Greatest Common Divisor of 2 and 28?

More with these numbers

Related Calculations

See Also

GCF Table

FAQ

What is the Greatest Common Divisor of 2 and 28?

How to find the GCF of 2 and 28?

What prime factors do 2 and 28 share?

How does the GCF reduce the fraction 2/28?

See Also

Number 1	Number 2	GCF
2	6	2
2	7	1
2	8	2
2	9	1
2	10	2
2	12	2
2	13	1
2	14	2
2	15	1
2	18	2
2	20	2
2	21	1
2	22	2
2	24	2
2	25	1
2	26	2
2	27	1
2	28	2
2	30	2
2	31	1
2	34	2
2	36	2
2	41	1
2	43	1
2	48	2
2	49	1
2	54	2
2	55	1
2	58	2
2	72	2

Number 1	Number 2	GCF
2	6	2
2	7	1
2	8	2
2	9	1
2	10	2
2	12	2
2	13	1
2	14	2
2	15	1
2	18	2
2	20	2
2	21	1
2	22	2
2	24	2
2	25	1
2	26	2
2	27	1
2	28	2
2	30	2
2	31	1
2	34	2
2	36	2
2	41	1
2	43	1
2	48	2
2	49	1
2	54	2
2	55	1
2	58	2
2	72	2

Number 1	Number 2	GCF
2	6	2
2	7	1
2	8	2
2	9	1
2	10	2
2	12	2
2	13	1
2	14	2
2	15	1
2	18	2
2	20	2
2	21	1
2	22	2
2	24	2
2	25	1
2	26	2
2	27	1
2	28	2
2	30	2
2	31	1
2	34	2
2	36	2
2	41	1
2	43	1
2	48	2
2	49	1
2	54	2
2	55	1
2	58	2
2	72	2