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    GCF for 6, 10 and 15

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

    What's the Greatest Common Factor (GCF) of 6, 10 and 15?

    Answer

    GCF of 6, 10 and 15 is
    1

    Common factors: 1

    Only 1 divides all three: no prime is a factor of each of 6, 10 and 15.

    Pairs do share factors — GCF(6, 10) = 2, GCF(6, 15) = 3, GCF(10, 15) = 5 — just none greater than 1 common to all three.

    6 = 2 × 3

    10 = 2 × 5

    15 = 3 × 5

    Prime61015Lowest power
    222——
    33—3—
    5—55—

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

    GCF = 1

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    https://calculat.io/en/number/greatest-common-factor-of-3-numbers/6--10--15Copy
    <a href="https://calculat.io/en/number/greatest-common-factor-of-3-numbers/6--10--15">What is the GCF of 6, 10 and 15? - Calculatio</a>Copy
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    What is the GCF of 6, 10 and 15? The GCF of 6, 10 and 15 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/6--10--15/generated.jpgCopy

    GCF Table

    1st2nd3rdGCF
    16101
    26102
    36101
    46102
    56101
    66102
    67101
    68102
    69101
    610102
    610111
    610122
    610131
    610142
    610151
    610162
    610171
    610182
    610191
    610202
    610211
    610222
    610231
    610242
    610251
    610262
    610271
    610282
    610291
    610302

    FAQ

    What's the Greatest Common Factor (GCF) of 6, 10 and 15?

    GCF of 6, 10 and 15 is 1

    What prime factors do 6, 10 and 15 share?

    None at all: 6, 10 and 15 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 6, 10 and 15 two numbers at a time?

    Yes. The GCF of 6 and 10 is 2, and the GCF of 2 and 15 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 6 : 10 : 15?

    Divide every term by the GCF 1: 6 ÷ 1 = 6, 10 ÷ 1 = 10 and 15 ÷ 1 = 15. So 6 : 10 : 15 in lowest terms is 6 : 10 : 15, and no whole number other than 1 divides all three of those.

    See Also