What is the Least Common Multiple of 90972 and 90980?

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 90972 and 90980 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90972 and 90980, than apply into the LCM equation.

GCF(90972,90980) = 4
LCM(90972,90980) = ( 90972 × 90980) / 4
LCM(90972,90980) = 8276632560 / 4
LCM(90972,90980) = 2069158140

Least Common Multiple (LCM) of 90972 and 90980 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90972 and 90980. First we will calculate the prime factors of 90972 and 90980.

Prime Factorization of 90972

Prime Factorization of 90980

Now multiplying the highest exponent prime factors to calculate the LCM of 90972 and 90980.

LCM(90972,90980) = 2² × 3² × 7¹ × 19² × 5¹ × 4549¹
LCM(90972,90980) = 2069158140