What is the Least Common Multiple of 505 and 518?

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 518 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 518, than apply into the LCM equation.

GCF(505,518) = 1
LCM(505,518) = ( 505 × 518) / 1
LCM(505,518) = 261590 / 1
LCM(505,518) = 261590

Least Common Multiple (LCM) of 505 and 518 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 505 and 518. First we will calculate the prime factors of 505 and 518.

Prime Factorization of 505

Prime Factorization of 518

Now multiplying the highest exponent prime factors to calculate the LCM of 505 and 518.

LCM(505,518) = 5¹ × 101¹ × 2¹ × 7¹ × 37¹
LCM(505,518) = 261590