What is the Least Common Multiple of 87840 and 87857?

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 87840 and 87857 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87840 and 87857, than apply into the LCM equation.

GCF(87840,87857) = 1
LCM(87840,87857) = ( 87840 × 87857) / 1
LCM(87840,87857) = 7717358880 / 1
LCM(87840,87857) = 7717358880

Least Common Multiple (LCM) of 87840 and 87857 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87840 and 87857. First we will calculate the prime factors of 87840 and 87857.

Prime Factorization of 87840

Prime Factorization of 87857

Now multiplying the highest exponent prime factors to calculate the LCM of 87840 and 87857.

LCM(87840,87857) = 2⁵ × 3² × 5¹ × 61¹ × 7² × 11¹ × 163¹
LCM(87840,87857) = 7717358880