LCM for 5 and 40

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What's the Least Common Multiple (LCM) of 5 and 40?

Answer

LCM of 5 and 40 is
40

First common multiples: 40, 80, 120, …

As a common denominator: multiply the top and bottom of x/5 by 8.

5 divides 40 (40 ÷ 5 = 8), so the LCM is the larger number itself.

5 — prime

40 = 23 × 5

Prime540Highest power
2—2323
5555

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

LCM = 23 × 5 = 40

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LCM Table

Number 1Number 2LCM
51785
51890
51995
52020
521105
522110
524120
52525
526130
527135
53030
531155
532160
53535
539195
54040
542210
543215
544220
54545
546230
548240
55050
551255
55555
558290
559295
56060
56565
57070

FAQ

What's the Least Common Multiple (LCM) of 5 and 40?

LCM of 5 and 40 is 40

How to find the LCM of 5 and 40 using prime factorization?

To find the LCM of 5 and 40, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 40.

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 5 and 40: LCM = 40, GCF = 5.

See Also