What is the Least Common Multiple of 7305 and 7320?

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 7305 and 7320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7305 and 7320, than apply into the LCM equation.

GCF(7305,7320) = 15
LCM(7305,7320) = ( 7305 × 7320) / 15
LCM(7305,7320) = 53472600 / 15
LCM(7305,7320) = 3564840

Least Common Multiple (LCM) of 7305 and 7320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7305 and 7320. First we will calculate the prime factors of 7305 and 7320.

Prime Factorization of 7305

Prime Factorization of 7320

Now multiplying the highest exponent prime factors to calculate the LCM of 7305 and 7320.

LCM(7305,7320) = 3¹ × 5¹ × 487¹ × 2³ × 61¹
LCM(7305,7320) = 3564840