What is the Least Common Multiple of 518 and 530?

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 518 and 530 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 518 and 530, than apply into the LCM equation.

GCF(518,530) = 2
LCM(518,530) = ( 518 × 530) / 2
LCM(518,530) = 274540 / 2
LCM(518,530) = 137270

Least Common Multiple (LCM) of 518 and 530 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 518 and 530. First we will calculate the prime factors of 518 and 530.

Prime Factorization of 518

Prime Factorization of 530

Now multiplying the highest exponent prime factors to calculate the LCM of 518 and 530.

LCM(518,530) = 2¹ × 7¹ × 37¹ × 5¹ × 53¹
LCM(518,530) = 137270