What is the Least Common Multiple of 15570 and 15578?

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 15570 and 15578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15570 and 15578, than apply into the LCM equation.

GCF(15570,15578) = 2
LCM(15570,15578) = ( 15570 × 15578) / 2
LCM(15570,15578) = 242549460 / 2
LCM(15570,15578) = 121274730

Least Common Multiple (LCM) of 15570 and 15578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15570 and 15578. First we will calculate the prime factors of 15570 and 15578.

Prime Factorization of 15570

Prime Factorization of 15578

Now multiplying the highest exponent prime factors to calculate the LCM of 15570 and 15578.

LCM(15570,15578) = 2¹ × 3² × 5¹ × 173¹ × 7789¹
LCM(15570,15578) = 121274730