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    LCM for 63 and 21

    "Least Common Multiple" Calculator

    Least Common Multiple of

    and

    What's the Least Common Multiple (LCM) of 63 and 21?

    Answer

    LCM of 63 and 21 is
    63

    (Sixty-three)

    Finding LCM for 63 and 21 using GCF of these numbers

    The first method to find LCM for numbers 63 and 21 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

    LCM = (Number1 × Number2) ÷ GCF

    GCF of numbers 63 and 21 is 21, so

    LCM = (63 × 21) ÷ 21

    LCM = 1323 ÷ 21

    LCM = 63

    Finding LCM for 63 and 21 by Listing Multiples

    The second method to find LCM for numbers 63 and 21 is to list out the common multiples for both numbers and pick the first one that matches:

    Multiples of 63: 63, 126, 189

    Multiples of 21: 21, 42, 63, 84, 105

    So the LCM for 63 and 21 is 63

    Finding LCM for 63 and 21 by Prime Factorization

    Another method to find LCM for numbers 63 and 21 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

    All Prime Factors of 63: 3, 3, 7 (exponent form: 32, 71)

    All Prime Factors of 21: 3, 7 (exponent form: 31, 71)

    32 × 71 = 63

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    What is the LCM of 63 and 21?. The LCM of 63 and 21 is 63 — the smallest common multiple of both integers.
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    LCM Table

    Number 1Number 2LCM
    636126
    63763
    638504
    63963
    6310630
    6311693
    6312252
    6313819
    6314126
    6315315
    63161008
    63171071
    6318126
    63191197
    63201260
    632163
    63221386
    63231449
    6324504
    63251575
    63261638
    6327189
    6328252
    63291827
    6330630
    63311953
    63322016
    6333693
    63342142
    6335315

    About "Least Common Multiple" Calculator

    This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 63 and 21? (The answer is: 63). Select the first number (e.g. '63') and the second number (e.g. '21'). After that hit the 'Calculate' button.
    Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers
    "Least Common Multiple" Calculator

    Least Common Multiple of

    and

    FAQ

    What's the Least Common Multiple (LCM) of 63 and 21?

    LCM of 63 and 21 is 63

    How to find the LCM of 63 and 21 using prime factorization?

    To find the LCM of 63 and 21, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 63.

    What is the difference between LCM and GCF?

    LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 63 and 21: LCM = 63, GCF = 21.

    See Also