What is the Least Common Multiple of 90981 and 90987?

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 90981 and 90987 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90981 and 90987, than apply into the LCM equation.

GCF(90981,90987) = 3
LCM(90981,90987) = ( 90981 × 90987) / 3
LCM(90981,90987) = 8278088247 / 3
LCM(90981,90987) = 2759362749

Least Common Multiple (LCM) of 90981 and 90987 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90981 and 90987. First we will calculate the prime factors of 90981 and 90987.

Prime Factorization of 90981

Prime Factorization of 90987

Now multiplying the highest exponent prime factors to calculate the LCM of 90981 and 90987.

LCM(90981,90987) = 3² × 11¹ × 919¹ × 13¹ × 2333¹
LCM(90981,90987) = 2759362749