LCM for 27 and 18

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What's the Least Common Multiple (LCM) of 27 and 18?

Answer

LCM of 27 and 18 is
54

First common multiples: 54, 108, 162, …

54 is divisible by both: 54 ÷ 27 = 2, 54 ÷ 18 = 3 — and 2 and 3 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/27 by 2 and of y/18 by 3.

27 = 33

18 = 2 × 32

Prime2718Highest power
2—22
3333233

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 2 × 33 = 54

More with these numbers

See Also

LCM Table

Number 1Number 2LCM
271854
2728756
2730270
2732864
2733297
2735945
2736108
2739351
27401,080
2742378
27431,161
27441,188
2745135
27491,323
27501,350
27531,431
275454
2763189
27641,728
2775675
278181
2790270
271002,700
27108108
271253,375

FAQ

What's the Least Common Multiple (LCM) of 27 and 18?

LCM of 27 and 18 is 54

How to find the LCM of 27 and 18 using prime factorization?

To find the LCM of 27 and 18, 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 27 and 18: LCM = 54, GCF = 9.

See Also