What is the Least Common Multiple of 2515 and 2520?

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 2515 and 2520 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2515 and 2520, than apply into the LCM equation.

GCF(2515,2520) = 5
LCM(2515,2520) = ( 2515 × 2520) / 5
LCM(2515,2520) = 6337800 / 5
LCM(2515,2520) = 1267560

Least Common Multiple (LCM) of 2515 and 2520 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2515 and 2520. First we will calculate the prime factors of 2515 and 2520.

Prime Factorization of 2515

Prime Factorization of 2520

Now multiplying the highest exponent prime factors to calculate the LCM of 2515 and 2520.

LCM(2515,2520) = 5¹ × 503¹ × 2³ × 3² × 7¹
LCM(2515,2520) = 1267560