GCF (HCF) of 105 and 130

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What is the Greatest Common Divisor of 105 and 130?

Answer

GCF (HCF) of 105 and 130 is
5

Common factors: 1, 5

5 divides both: 105 ÷ 5 = 21, 130 ÷ 5 = 26 — and 21 and 26 share no factor but 1, so no larger number divides both.

105 = 3 × 5 × 7

130 = 2 × 5 × 13

Prime105130Lowest power
2—2—
33——
5555
77——
13—13—

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

GCF = 5

See Also

FAQ

What is the Greatest Common Divisor of 105 and 130?

GCF (HCF) of 105 and 130 is 5

How to find the GCF of 105 and 130?

You can find the GCF of 105 and 130 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 105 and 130 is 5.

What prime factors do 105 and 130 share?

The prime factorizations of 105 and 130 have 5 in common, and multiplying those shared primes gives 5 — exactly the greatest common factor.

How does the GCF reduce the fraction 105/130?

Divide the numerator and the denominator by the GCF 5: 105 ÷ 5 = 21 and 130 ÷ 5 = 26. So 105/130 in lowest terms is 21/26.