What is the Least Common Multiple of 20511 and 20518?

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 20511 and 20518 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20511 and 20518, than apply into the LCM equation.

GCF(20511,20518) = 1
LCM(20511,20518) = ( 20511 × 20518) / 1
LCM(20511,20518) = 420844698 / 1
LCM(20511,20518) = 420844698

Least Common Multiple (LCM) of 20511 and 20518 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20511 and 20518. First we will calculate the prime factors of 20511 and 20518.

Prime Factorization of 20511

Prime Factorization of 20518

Now multiplying the highest exponent prime factors to calculate the LCM of 20511 and 20518.

LCM(20511,20518) = 3² × 43¹ × 53¹ × 2¹ × 10259¹
LCM(20511,20518) = 420844698