What is the Least Common Multiple of 505 and 510?

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 505 and 510 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 505 and 510, than apply into the LCM equation.

GCF(505,510) = 5
LCM(505,510) = ( 505 × 510) / 5
LCM(505,510) = 257550 / 5
LCM(505,510) = 51510

Least Common Multiple (LCM) of 505 and 510 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 505 and 510. First we will calculate the prime factors of 505 and 510.

Prime Factorization of 505

Prime Factorization of 510

Now multiplying the highest exponent prime factors to calculate the LCM of 505 and 510.

LCM(505,510) = 5¹ × 101¹ × 2¹ × 3¹ × 17¹
LCM(505,510) = 51510