What is the Least Common Multiple of 20491 and 20499?

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 20491 and 20499 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20491 and 20499, than apply into the LCM equation.

GCF(20491,20499) = 1
LCM(20491,20499) = ( 20491 × 20499) / 1
LCM(20491,20499) = 420045009 / 1
LCM(20491,20499) = 420045009

Least Common Multiple (LCM) of 20491 and 20499 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20491 and 20499. First we will calculate the prime factors of 20491 and 20499.

Prime Factorization of 20491

Prime Factorization of 20499

Now multiplying the highest exponent prime factors to calculate the LCM of 20491 and 20499.

LCM(20491,20499) = 31¹ × 661¹ × 3¹ × 6833¹
LCM(20491,20499) = 420045009