What is the Least Common Multiple of 40205 and 40215?

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 40205 and 40215 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40205 and 40215, than apply into the LCM equation.

GCF(40205,40215) = 5
LCM(40205,40215) = ( 40205 × 40215) / 5
LCM(40205,40215) = 1616844075 / 5
LCM(40205,40215) = 323368815

Least Common Multiple (LCM) of 40205 and 40215 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40205 and 40215. First we will calculate the prime factors of 40205 and 40215.

Prime Factorization of 40205

Prime Factorization of 40215

Now multiplying the highest exponent prime factors to calculate the LCM of 40205 and 40215.

LCM(40205,40215) = 5¹ × 11¹ × 17¹ × 43¹ × 3¹ × 7¹ × 383¹
LCM(40205,40215) = 323368815