What is the Least Common Multiple of 20625 and 20631?

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 20625 and 20631 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20625 and 20631, than apply into the LCM equation.

GCF(20625,20631) = 3
LCM(20625,20631) = ( 20625 × 20631) / 3
LCM(20625,20631) = 425514375 / 3
LCM(20625,20631) = 141838125

Least Common Multiple (LCM) of 20625 and 20631 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20625 and 20631. First we will calculate the prime factors of 20625 and 20631.

Prime Factorization of 20625

Prime Factorization of 20631

Now multiplying the highest exponent prime factors to calculate the LCM of 20625 and 20631.

LCM(20625,20631) = 3¹ × 5⁴ × 11¹ × 13¹ × 23²
LCM(20625,20631) = 141838125