What is the Least Common Multiple of 90981 and 90990?

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 90990 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 90990, than apply into the LCM equation.

GCF(90981,90990) = 9
LCM(90981,90990) = ( 90981 × 90990) / 9
LCM(90981,90990) = 8278361190 / 9
LCM(90981,90990) = 919817910

Least Common Multiple (LCM) of 90981 and 90990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90981 and 90990. First we will calculate the prime factors of 90981 and 90990.

Prime Factorization of 90981

Prime Factorization of 90990

Now multiplying the highest exponent prime factors to calculate the LCM of 90981 and 90990.

LCM(90981,90990) = 3³ × 11¹ × 919¹ × 2¹ × 5¹ × 337¹
LCM(90981,90990) = 919817910