What is the Least Common Multiple of 80636 and 80640?

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 80636 and 80640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80636 and 80640, than apply into the LCM equation.

GCF(80636,80640) = 4
LCM(80636,80640) = ( 80636 × 80640) / 4
LCM(80636,80640) = 6502487040 / 4
LCM(80636,80640) = 1625621760

Least Common Multiple (LCM) of 80636 and 80640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 80636 and 80640. First we will calculate the prime factors of 80636 and 80640.

Prime Factorization of 80636

Prime Factorization of 80640

Now multiplying the highest exponent prime factors to calculate the LCM of 80636 and 80640.

LCM(80636,80640) = 2⁸ × 19¹ × 1061¹ × 3² × 5¹ × 7¹
LCM(80636,80640) = 1625621760