What is the Least Common Multiple of 15621 and 15630?

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 15621 and 15630 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15621 and 15630, than apply into the LCM equation.

GCF(15621,15630) = 3
LCM(15621,15630) = ( 15621 × 15630) / 3
LCM(15621,15630) = 244156230 / 3
LCM(15621,15630) = 81385410

Least Common Multiple (LCM) of 15621 and 15630 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15621 and 15630. First we will calculate the prime factors of 15621 and 15630.

Prime Factorization of 15621

Prime Factorization of 15630

Now multiplying the highest exponent prime factors to calculate the LCM of 15621 and 15630.

LCM(15621,15630) = 3¹ × 41¹ × 127¹ × 2¹ × 5¹ × 521¹
LCM(15621,15630) = 81385410