LCM for 18 and 54

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What's the Least Common Multiple (LCM) of 18 and 54?

Answer

LCM of 18 and 54 is
54

First common multiples: 54, 108, 162, …

As a common denominator: multiply the top and bottom of x/18 by 3.

18 divides 54 (54 ÷ 18 = 3), so the LCM is the larger number itself.

18 = 2 × 32

54 = 2 × 33

Prime1854Highest power
2222
3323333

LCM = 2 × 33 = 54

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LCM Table

Number 1Number 2LCM
1831558
1832288
1833198
1835630
183636
1837666
1838342
1839234
1840360
1841738
1842126
184590
1848144
1849882
1852468
185454
1856504
1857342
18591,062
1860180
1863126
1864576
1866198
1870630
187272
1875450
1878234
1880720
1881162
1884252

FAQ

What's the Least Common Multiple (LCM) of 18 and 54?

LCM of 18 and 54 is 54

How to find the LCM of 18 and 54 using prime factorization?

To find the LCM of 18 and 54, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 54.

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 18 and 54: LCM = 54, GCF = 18.

See Also