What is the Least Common Multiple of 85020 and 85040?

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 85020 and 85040 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 85020 and 85040, than apply into the LCM equation.

GCF(85020,85040) = 20
LCM(85020,85040) = ( 85020 × 85040) / 20
LCM(85020,85040) = 7230100800 / 20
LCM(85020,85040) = 361505040

Least Common Multiple (LCM) of 85020 and 85040 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 85020 and 85040. First we will calculate the prime factors of 85020 and 85040.

Prime Factorization of 85020

Prime Factorization of 85040

Now multiplying the highest exponent prime factors to calculate the LCM of 85020 and 85040.

LCM(85020,85040) = 2⁴ × 3¹ × 5¹ × 13¹ × 109¹ × 1063¹
LCM(85020,85040) = 361505040