What is the Least Common Multiple of 20040 and 20055?

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 20040 and 20055 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20040 and 20055, than apply into the LCM equation.

GCF(20040,20055) = 15
LCM(20040,20055) = ( 20040 × 20055) / 15
LCM(20040,20055) = 401902200 / 15
LCM(20040,20055) = 26793480

Least Common Multiple (LCM) of 20040 and 20055 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20040 and 20055. First we will calculate the prime factors of 20040 and 20055.

Prime Factorization of 20040

Prime Factorization of 20055

Now multiplying the highest exponent prime factors to calculate the LCM of 20040 and 20055.

LCM(20040,20055) = 2³ × 3¹ × 5¹ × 167¹ × 7¹ × 191¹
LCM(20040,20055) = 26793480