What is the Least Common Multiple of 4620 and 4638?

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 4620 and 4638 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4620 and 4638, than apply into the LCM equation.

GCF(4620,4638) = 6
LCM(4620,4638) = ( 4620 × 4638) / 6
LCM(4620,4638) = 21427560 / 6
LCM(4620,4638) = 3571260

Least Common Multiple (LCM) of 4620 and 4638 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4620 and 4638. First we will calculate the prime factors of 4620 and 4638.

Prime Factorization of 4620

Prime Factorization of 4638

Now multiplying the highest exponent prime factors to calculate the LCM of 4620 and 4638.

LCM(4620,4638) = 2² × 3¹ × 5¹ × 7¹ × 11¹ × 773¹
LCM(4620,4638) = 3571260