What is the Least Common Multiple of 4221 and 4225?

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 4221 and 4225 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4221 and 4225, than apply into the LCM equation.

GCF(4221,4225) = 1
LCM(4221,4225) = ( 4221 × 4225) / 1
LCM(4221,4225) = 17833725 / 1
LCM(4221,4225) = 17833725

Least Common Multiple (LCM) of 4221 and 4225 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4221 and 4225. First we will calculate the prime factors of 4221 and 4225.

Prime Factorization of 4221

Prime Factorization of 4225

Now multiplying the highest exponent prime factors to calculate the LCM of 4221 and 4225.

LCM(4221,4225) = 3² × 7¹ × 67¹ × 5² × 13²
LCM(4221,4225) = 17833725