What is the Least Common Multiple of 12205 and 12215?

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 12205 and 12215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12205 and 12215, than apply into the LCM equation.

GCF(12205,12215) = 5
LCM(12205,12215) = ( 12205 × 12215) / 5
LCM(12205,12215) = 149084075 / 5
LCM(12205,12215) = 29816815

Least Common Multiple (LCM) of 12205 and 12215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12205 and 12215. First we will calculate the prime factors of 12205 and 12215.

Prime Factorization of 12205

Prime Factorization of 12215

Now multiplying the highest exponent prime factors to calculate the LCM of 12205 and 12215.

LCM(12205,12215) = 5¹ × 2441¹ × 7¹ × 349¹
LCM(12205,12215) = 29816815