GCF (HCF) of 55 and 88

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What is the Greatest Common Divisor of 55 and 88?

Answer

GCF (HCF) of 55 and 88 is
11

Common factors: 1, 11

11 divides both: 55 ÷ 11 = 5, 88 ÷ 11 = 8 — and 5 and 8 share no factor but 1, so no larger number divides both.

55 = 5 × 11

88 = 23 × 11

Prime5588Lowest power
2—23—
55——
11111111

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

GCF = 11

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GCF Table

Number 1Number 2GCF
55731
55741
55755
55761
557711
55781
55791
55805
55811
55821
55831
55841
55855
55861
55871
558811
55891
55905
55911
55921
55931
55941
55955
55961
55971
55981
559911
551005
551011
551021

FAQ

What is the Greatest Common Divisor of 55 and 88?

GCF (HCF) of 55 and 88 is 11

How to find the GCF of 55 and 88?

You can find the GCF of 55 and 88 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 55 and 88 is 11.

What prime factors do 55 and 88 share?

The prime factorizations of 55 and 88 have 11 in common, and multiplying those shared primes gives 11 — exactly the greatest common factor.

How does the GCF reduce the fraction 55/88?

Divide the numerator and the denominator by the GCF 11: 55 ÷ 11 = 5 and 88 ÷ 11 = 8. So 55/88 in lowest terms is 5/8.

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