What is the Least Common Multiple of 80638 and 80642?

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 80638 and 80642 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80638 and 80642, than apply into the LCM equation.

GCF(80638,80642) = 2
LCM(80638,80642) = ( 80638 × 80642) / 2
LCM(80638,80642) = 6502809596 / 2
LCM(80638,80642) = 3251404798

Least Common Multiple (LCM) of 80638 and 80642 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 80638 and 80642. First we will calculate the prime factors of 80638 and 80642.

Prime Factorization of 80638

Prime Factorization of 80642

Now multiplying the highest exponent prime factors to calculate the LCM of 80638 and 80642.

LCM(80638,80642) = 2¹ × 23¹ × 1753¹ × 61¹ × 661¹
LCM(80638,80642) = 3251404798