What is the Least Common Multiple of 87981 and 87987?

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 87981 and 87987 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87981 and 87987, than apply into the LCM equation.

GCF(87981,87987) = 3
LCM(87981,87987) = ( 87981 × 87987) / 3
LCM(87981,87987) = 7741184247 / 3
LCM(87981,87987) = 2580394749

Least Common Multiple (LCM) of 87981 and 87987 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87981 and 87987. First we will calculate the prime factors of 87981 and 87987.

Prime Factorization of 87981

Prime Factorization of 87987

Now multiplying the highest exponent prime factors to calculate the LCM of 87981 and 87987.

LCM(87981,87987) = 3¹ × 29327¹ × 139¹ × 211¹
LCM(87981,87987) = 2580394749