What is the Least Common Multiple of 20489 and 20502?

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 20489 and 20502 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20489 and 20502, than apply into the LCM equation.

GCF(20489,20502) = 1
LCM(20489,20502) = ( 20489 × 20502) / 1
LCM(20489,20502) = 420065478 / 1
LCM(20489,20502) = 420065478

Least Common Multiple (LCM) of 20489 and 20502 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20489 and 20502. First we will calculate the prime factors of 20489 and 20502.

Prime Factorization of 20489

Prime Factorization of 20502

Now multiplying the highest exponent prime factors to calculate the LCM of 20489 and 20502.

LCM(20489,20502) = 7¹ × 2927¹ × 2¹ × 3² × 17¹ × 67¹
LCM(20489,20502) = 420065478