What is the Least Common Multiple of 81128 and 81142?

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 81128 and 81142 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81128 and 81142, than apply into the LCM equation.

GCF(81128,81142) = 2
LCM(81128,81142) = ( 81128 × 81142) / 2
LCM(81128,81142) = 6582888176 / 2
LCM(81128,81142) = 3291444088

Least Common Multiple (LCM) of 81128 and 81142 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81128 and 81142. First we will calculate the prime factors of 81128 and 81142.

Prime Factorization of 81128

Prime Factorization of 81142

Now multiplying the highest exponent prime factors to calculate the LCM of 81128 and 81142.

LCM(81128,81142) = 2³ × 10141¹ × 29¹ × 1399¹
LCM(81128,81142) = 3291444088