What is the Least Common Multiple of 53820 and 53840?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 53820 and 53840 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 53820 and 53840, than apply into the LCM equation.

GCF(53820,53840) = 20
LCM(53820,53840) = ( 53820 × 53840) / 20
LCM(53820,53840) = 2897668800 / 20
LCM(53820,53840) = 144883440

Least Common Multiple (LCM) of 53820 and 53840 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 53820 and 53840. First we will calculate the prime factors of 53820 and 53840.

Prime Factorization of 53820

Prime Factorization of 53840

Now multiplying the highest exponent prime factors to calculate the LCM of 53820 and 53840.

LCM(53820,53840) = 2⁴ × 3² × 5¹ × 13¹ × 23¹ × 673¹
LCM(53820,53840) = 144883440