GCF (HCF) of 56 and 64

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What is the Greatest Common Divisor of 56 and 64?

Answer

GCF (HCF) of 56 and 64 is
8

Common factors: 1, 2, 4, 8

8 divides both: 56 ÷ 8 = 7, 64 ÷ 8 = 8 — and 7 and 8 share no factor but 1, so no larger number divides both.

56 = 23 × 7

64 = 26

Prime5664Lowest power
2232623
77——

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

GCF = 23 = 8

See Also

GCF Table

Number 1Number 2GCF
56497
56502
56511
56524
56531
56542
56551
565656
56571
56582
56591
56604
56611
56622
56637
56648
56651
56662
56671
56684
56691
567014
56711
56728
56731
56742
56751
56764
56777
56782

FAQ

What is the Greatest Common Divisor of 56 and 64?

GCF (HCF) of 56 and 64 is 8

How to find the GCF of 56 and 64?

You can find the GCF of 56 and 64 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 56 and 64 is 8.

What prime factors do 56 and 64 share?

The prime factorizations of 56 and 64 have 2 × 2 × 2 in common, and multiplying those shared primes gives 8 — exactly the greatest common factor.

How does the GCF reduce the fraction 56/64?

Divide the numerator and the denominator by the GCF 8: 56 ÷ 8 = 7 and 64 ÷ 8 = 8. So 56/64 in lowest terms is 7/8.