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    GCF for 3, 5 and 7

    "Greatest Common Factor of 3 Numbers" Calculator
    Greatest Common Factor of
    ,
    and

    What's the Greatest Common Factor (GCF) of 3, 5 and 7?

    Answer

    GCF of 3, 5 and 7 is
    1

    Common factors: 1

    Only 1 divides all three: no prime is a factor of each of 3, 5 and 7.

    The three numbers are pairwise coprime: no two of them share a factor other than 1.

    3 — prime

    5 — prime

    7 — prime

    Prime357Lowest power
    33———
    5—5——
    7——7—

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

    GCF = 1

    More with these numbers

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    https://calculat.io/en/number/greatest-common-factor-of-3-numbers/3--5--7Copy
    <a href="https://calculat.io/en/number/greatest-common-factor-of-3-numbers/3--5--7">What is the GCF of 3, 5 and 7? - Calculatio</a>Copy
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    What is the GCF of 3, 5 and 7? The GCF of 3, 5 and 7 is 1 — the largest number that divides all three with no remainder. Step-by-step solution for three numbers.
    https://calculat.io/en/number/greatest-common-factor-of-3-numbers/3--5--7/generated.jpgCopy

    GCF Table

    1st2nd3rdGCF
    1351
    2351
    3351
    3451
    3551
    3561
    3571
    3581
    3591
    35101
    35111
    35121
    35131
    35141
    35151
    35161
    35171
    35181
    35191
    35201
    35211
    35221
    35231
    35241
    35251
    35261
    35271
    35281
    35291
    35301

    FAQ

    What's the Greatest Common Factor (GCF) of 3, 5 and 7?

    GCF of 3, 5 and 7 is 1

    What prime factors do 3, 5 and 7 share?

    None at all: 3, 5 and 7 have no prime factor in common, so the only positive integer dividing all three is 1 and their GCF is 1.

    Can you get the GCF of 3, 5 and 7 two numbers at a time?

    Yes. The GCF of 3 and 5 is 1, and the GCF of 1 and 7 is 1 — the same answer, because the greatest common factor is associative and does not depend on the order of the three numbers.

    How does the GCF simplify the ratio 3 : 5 : 7?

    Divide every term by the GCF 1: 3 ÷ 1 = 3, 5 ÷ 1 = 5 and 7 ÷ 1 = 7. So 3 : 5 : 7 in lowest terms is 3 : 5 : 7, and no whole number other than 1 divides all three of those.

    See Also