What is the Least Common Multiple of 85815 and 85820?

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 85815 and 85820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 85815 and 85820, than apply into the LCM equation.

GCF(85815,85820) = 5
LCM(85815,85820) = ( 85815 × 85820) / 5
LCM(85815,85820) = 7364643300 / 5
LCM(85815,85820) = 1472928660

Least Common Multiple (LCM) of 85815 and 85820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 85815 and 85820. First we will calculate the prime factors of 85815 and 85820.

Prime Factorization of 85815

Prime Factorization of 85820

Now multiplying the highest exponent prime factors to calculate the LCM of 85815 and 85820.

LCM(85815,85820) = 3² × 5¹ × 1907¹ × 2² × 7¹ × 613¹
LCM(85815,85820) = 1472928660