What is the Least Common Multiple of 21221 and 21227?

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 21221 and 21227 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21221 and 21227, than apply into the LCM equation.

GCF(21221,21227) = 1
LCM(21221,21227) = ( 21221 × 21227) / 1
LCM(21221,21227) = 450458167 / 1
LCM(21221,21227) = 450458167

Least Common Multiple (LCM) of 21221 and 21227 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21221 and 21227. First we will calculate the prime factors of 21221 and 21227.

Prime Factorization of 21221

Prime Factorization of 21227

Now multiplying the highest exponent prime factors to calculate the LCM of 21221 and 21227.

LCM(21221,21227) = 21221¹ × 21227¹
LCM(21221,21227) = 450458167