What is the Least Common Multiple of 40215 and 40221?

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 40215 and 40221 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40215 and 40221, than apply into the LCM equation.

GCF(40215,40221) = 3
LCM(40215,40221) = ( 40215 × 40221) / 3
LCM(40215,40221) = 1617487515 / 3
LCM(40215,40221) = 539162505

Least Common Multiple (LCM) of 40215 and 40221 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40215 and 40221. First we will calculate the prime factors of 40215 and 40221.

Prime Factorization of 40215

Prime Factorization of 40221

Now multiplying the highest exponent prime factors to calculate the LCM of 40215 and 40221.

LCM(40215,40221) = 3² × 5¹ × 7¹ × 383¹ × 41¹ × 109¹
LCM(40215,40221) = 539162505