Calculators & Converters

    What is the GCF of 42, 63 & 140?

    GCF - Highest Common Factor Calculator

    getcalc.com's HCF or GCF calculator & step by step work to find what is GCF of 42, 63 and 140.

    GCF(42, 63, 140) = 7

    The Greatest or Highest Common Factor 7 divides each one of the integer of this group. By using this GCF calculator & the work with steps, grade school students, teachers or parents can verify the results or the workout for HCF of 42, 63 & 140.

    How to find HCF(42, 63, 140)?

    The below is the step by step work for how to find what is the GCF of three numbers 42, 63 & 140.
    Problem & Workout :
    step 1 Address the method, input parameters & values
    Integers: 42, 63, 140
    find gcf (42, 63 and 140) = ?

    step 2 Find the prime factors of all integers of the group
    42 = 2 x 3 x 7
    63 = 3 x 3 x 7
    140 = 2 x 2 x 5 x 7

    step 3The common prime factor or the product of all common prime factors between all integers is the highest common factor of this group of integers (42, 63 & 140).
    GCF(42, 63, 140) = 7

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