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    GCF (HCF) of 9 and 13

    "Greatest Common Factor" Calculator
    Greatest Common Factor of
    and

    What is the Greatest Common Divisor of 9 and 13?

    Answer

    GCF (HCF) of 9 and 13 is
    1

    Common factors: 1

    Only 1 divides both: 9 and 13 share no prime factor.

    Such numbers are called coprime (relatively prime); their LCM is just the product: 9 × 13 = 117.

    9 = 32

    13 — prime

    Prime913Lowest power
    332——
    13—13—

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

    GCF = 1

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    What is the GCF (HCF) of 9 and 13. The GCF of 9 and 13 is 1 — 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
    933
    941
    951
    963
    971
    981
    9101
    9111
    9123
    9131
    9141
    9153
    9161
    9171
    9189
    9191
    9201
    9213
    9221
    9243
    9251
    9261
    9279
    9281
    9291
    9303
    9341
    9351
    9369
    9393

    FAQ

    What is the Greatest Common Divisor of 9 and 13?

    GCF (HCF) of 9 and 13 is 1

    How to find the GCF of 9 and 13?

    You can find the GCF of 9 and 13 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 9 and 13 is 1.

    What prime factors do 9 and 13 share?

    9 and 13 have no prime factor in common, so the only integer that divides both of them is 1 and their GCF is 1.

    How does the GCF reduce the fraction 9/13?

    Divide the numerator and the denominator by the GCF 1: 9 ÷ 1 = 9 and 13 ÷ 1 = 13. So 9/13 in lowest terms is 9/13.

    Are 9 and 13 coprime?

    Yes, 9 and 13 are coprime (relatively prime) because their Greatest Common Factor is 1.

    See Also