What is the Least Common Multiple of 2205 and 2215?

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 2205 and 2215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2205 and 2215, than apply into the LCM equation.

GCF(2205,2215) = 5
LCM(2205,2215) = ( 2205 × 2215) / 5
LCM(2205,2215) = 4884075 / 5
LCM(2205,2215) = 976815

Least Common Multiple (LCM) of 2205 and 2215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2205 and 2215. First we will calculate the prime factors of 2205 and 2215.

Prime Factorization of 2205

Prime Factorization of 2215

Now multiplying the highest exponent prime factors to calculate the LCM of 2205 and 2215.

LCM(2205,2215) = 3² × 5¹ × 7² × 443¹
LCM(2205,2215) = 976815