What is the Least Common Multiple of 23205 and 23215?

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 23205 and 23215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 23205 and 23215, than apply into the LCM equation.

GCF(23205,23215) = 5
LCM(23205,23215) = ( 23205 × 23215) / 5
LCM(23205,23215) = 538704075 / 5
LCM(23205,23215) = 107740815

Least Common Multiple (LCM) of 23205 and 23215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 23205 and 23215. First we will calculate the prime factors of 23205 and 23215.

Prime Factorization of 23205

Prime Factorization of 23215

Now multiplying the highest exponent prime factors to calculate the LCM of 23205 and 23215.

LCM(23205,23215) = 3¹ × 5¹ × 7¹ × 13¹ × 17¹ × 4643¹
LCM(23205,23215) = 107740815