What is the Least Common Multiple of 4820 and 4840?

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 4820 and 4840 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4820 and 4840, than apply into the LCM equation.

GCF(4820,4840) = 20
LCM(4820,4840) = ( 4820 × 4840) / 20
LCM(4820,4840) = 23328800 / 20
LCM(4820,4840) = 1166440

Least Common Multiple (LCM) of 4820 and 4840 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4820 and 4840. First we will calculate the prime factors of 4820 and 4840.

Prime Factorization of 4820

Prime Factorization of 4840

Now multiplying the highest exponent prime factors to calculate the LCM of 4820 and 4840.

LCM(4820,4840) = 2³ × 5¹ × 241¹ × 11²
LCM(4820,4840) = 1166440