What is the Least Common Multiple of 7515 and 7521?

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 7515 and 7521 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7515 and 7521, than apply into the LCM equation.

GCF(7515,7521) = 3
LCM(7515,7521) = ( 7515 × 7521) / 3
LCM(7515,7521) = 56520315 / 3
LCM(7515,7521) = 18840105

Least Common Multiple (LCM) of 7515 and 7521 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7515 and 7521. First we will calculate the prime factors of 7515 and 7521.

Prime Factorization of 7515

Prime Factorization of 7521

Now multiplying the highest exponent prime factors to calculate the LCM of 7515 and 7521.

LCM(7515,7521) = 3² × 5¹ × 167¹ × 23¹ × 109¹
LCM(7515,7521) = 18840105