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    GCF (HCF) of 100 and 315

    "Greatest Common Factor" Calculator
    Greatest Common Factor of
    and

    What is the Greatest Common Divisor of 100 and 315?

    Answer

    GCF (HCF) of 100 and 315 is
    5

    Common factors: 1, 5

    5 divides both: 100 ÷ 5 = 20, 315 ÷ 5 = 63 — and 20 and 63 share no factor but 1, so no larger number divides both.

    100 = 22 × 52

    315 = 32 × 5 × 7

    Prime100315Lowest power
    222——
    3—32—
    55255
    7—7—

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

    GCF = 5

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    What is the GCF (HCF) of 100 and 315. The GCF of 100 and 315 is 5 — the biggest number that can divide both integers. Step-by-step GCF (GCD) calculation by factoring.
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    GCF Table

    Number 1Number 2GCF
    1002055
    10022020
    10023010
    1002355
    10024020
    1002455
    10025050
    10026020
    10027010
    10027525
    10028020
    10029010
    100300100
    1003055
    10031010
    1003155
    1003355
    1003455
    10035050
    1003555
    10036020
    10037010
    10037525
    10038020
    10039010
    1003955
    100400100
    10041010
    1004155
    10042020

    FAQ

    What is the Greatest Common Divisor of 100 and 315?

    GCF (HCF) of 100 and 315 is 5

    How to find the GCF of 100 and 315?

    You can find the GCF of 100 and 315 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 100 and 315 is 5.

    What prime factors do 100 and 315 share?

    The prime factorizations of 100 and 315 have 5 in common, and multiplying those shared primes gives 5 — exactly the greatest common factor.

    How does the GCF reduce the fraction 100/315?

    Divide the numerator and the denominator by the GCF 5: 100 ÷ 5 = 20 and 315 ÷ 5 = 63. So 100/315 in lowest terms is 20/63.

    See Also