Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    LCM for 4, 6 and 15

    "Least Common Multiple of 3 Numbers" Calculator
    Least Common Multiple of
    ,
    and

    What's the Least Common Multiple (LCM) of 4, 6 and 15?

    Answer

    LCM of 4, 6 and 15 is
    60

    (Sixty)

    60 is the smallest positive integer that 4, 6 and 15 all divide without a remainder — every other common multiple of the three is a multiple of it.

    Finding the LCM of 4, 6 and 15 by Prime Factorization

    Split all three numbers into prime factors, then take every prime that shows up in at least one of them, each raised to the highest power it reaches there. Multiplying those highest powers gives the least common multiple:

    All Prime Factors of 4: 2 × 2 (exponent form: 22)

    All Prime Factors of 6: 2 × 3 (exponent form: 2 × 3)

    All Prime Factors of 15: 3 × 5 (exponent form: 3 × 5)

    Prime factor4615Highest power
    2222—22
    3—333
    5——55

    LCM = 22 × 3 × 5 = 60

    Checking the LCM of 4, 6 and 15 Two Numbers at a Time

    The least common multiple is associative, so three numbers can be handled as two pairs: first the LCM of the first two, then the LCM of that value and the third. Each pair goes through the two-number formula, which uses the greatest common divisor:

    LCM(a, b) = (a × b) ÷ GCD(a, b)

    LCM(4, 6) = (4 × 6) ÷ 2 = 24 ÷ 2 = 12

    LCM(12, 15) = (12 × 15) ÷ 3 = 180 ÷ 3 = 60

    LCM(4, 6, 15) = 60

    The pairs may be taken in any order — 6 and 15 first, then 4 — and the answer is the same 60. That is exactly why the two routes on this page agree.

    Related Calculations

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/number/least-common-multiple-lcm-of-3-numbers/4--6--15Copy
    <a href="https://calculat.io/en/number/least-common-multiple-lcm-of-3-numbers/4--6--15">What is the LCM of 4, 6 and 15? - Calculatio</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    What is the LCM of 4, 6 and 15?. The LCM of 4, 6 and 15 is 60 — the smallest number all three divide with no remainder. Step-by-step solution for three numbers.
    https://calculat.io/en/number/least-common-multiple-lcm-of-3-numbers/4--6--15/generated.jpgCopy

    LCM Table

    Number 1Number 2Number 3LCM
    14612
    24612
    34612
    44612
    45660
    46612
    46784
    46824
    46936
    461060
    4611132
    461212
    4613156
    461484
    461560
    461648
    4617204
    461836
    4619228
    462060
    462184
    4622132
    4623276
    462424
    4625300
    4626156
    4627108
    462884
    4629348
    463060

    About "Least Common Multiple of 3 Numbers" Calculator

    This calculator finds the Least Common Multiple (LCM) of three numbers at once, without doing it in two passes. For example, it can help you find out what's the Least Common Multiple (LCM) of 4, 6 and 15? (The answer is: 60). Enter the first number (e.g. '4'), the second (e.g. '6') and the third (e.g. '15'), then hit the 'Calculate' button.
    The Least Common Multiple of three numbers is the smallest positive integer that all three of them divide without a remainder
    "Least Common Multiple of 3 Numbers" Calculator
    Least Common Multiple of
    ,
    and

    FAQ

    What's the Least Common Multiple (LCM) of 4, 6 and 15?

    LCM of 4, 6 and 15 is 60

    How to find the LCM of 4, 6 and 15 by prime factorization?

    Take every prime that appears in 4, 6 and 15 to the highest power it reaches in any one of them and multiply: 2² × 3 × 5 = 60.

    Can you get the LCM of 4, 6 and 15 two numbers at a time?

    Yes, and it is the check this page prints. The LCM of 4 and 6 is 12, and the LCM of 12 and 15 is 60 — the same answer, because the least common multiple is associative and does not depend on the order of the three numbers.

    Is 60 divisible by 4, 6 and 15?

    Yes, and by definition it is the smallest positive integer that is: 60 ÷ 4, 60 ÷ 6 and 60 ÷ 15 all come out whole. Any other common multiple of 4, 6 and 15 is a multiple of 60.

    See Also