What is the Least Common Multiple of 20210 and 20215?

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 20210 and 20215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20210 and 20215, than apply into the LCM equation.

GCF(20210,20215) = 5
LCM(20210,20215) = ( 20210 × 20215) / 5
LCM(20210,20215) = 408545150 / 5
LCM(20210,20215) = 81709030

Least Common Multiple (LCM) of 20210 and 20215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20210 and 20215. First we will calculate the prime factors of 20210 and 20215.

Prime Factorization of 20210

Prime Factorization of 20215

Now multiplying the highest exponent prime factors to calculate the LCM of 20210 and 20215.

LCM(20210,20215) = 2¹ × 5¹ × 43¹ × 47¹ × 13¹ × 311¹
LCM(20210,20215) = 81709030