LCM for 72 and 108

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What's the Least Common Multiple (LCM) of 72 and 108?

Answer

LCM of 72 and 108 is
216

(Two hundred sixteen)

Finding LCM for 72 and 108 using GCF of these numbers

The first method to find LCM for numbers 72 and 108 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 72 and 108 is 36, so

LCM = (72 × 108) ÷ 36

LCM = 7,776 ÷ 36

LCM = 216

Finding LCM for 72 and 108 by Listing Multiples

The second method to find LCM for numbers 72 and 108 is to list out the common multiples for both numbers and pick the first one that matches:

Multiples of 72: 72, 144, 216, 288, 360

Multiples of 108: 108, 216, 324, 432

So the LCM for 72 and 108 is 216

Finding LCM for 72 and 108 by Prime Factorization

Another method to find LCM for numbers 72 and 108 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 72: 2, 2, 2, 3, 3 (exponent form: 23, 32)

All Prime Factors of 108: 2, 2, 3, 3, 3 (exponent form: 22, 33)

23 × 33 = 216

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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 72 and 108? (The answer is: 216). Select the first number (e.g. '72') and the second number (e.g. '108'). 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
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LCM Table

Number 1Number 2LCM
72932,232
72943,384
72956,840
7296288
72976,984
72983,528
7299792
721001,800
721017,272
721021,224
721037,416
72104936
721052,520
721063,816
721077,704
72108216
721097,848
721103,960
721112,664
721121,008
721138,136
721141,368
721158,280
721162,088
72117936
721184,248
721198,568
72120360
721218,712
721224,392

FAQ

What's the Least Common Multiple (LCM) of 72 and 108?

LCM of 72 and 108 is 216

How to find the LCM of 72 and 108 using prime factorization?

To find the LCM of 72 and 108, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 216.

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 72 and 108: LCM = 216, GCF = 36.

See Also