What is the Least Common Multiple of 74638 and 74642?

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 74638 and 74642 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74638 and 74642, than apply into the LCM equation.

GCF(74638,74642) = 2
LCM(74638,74642) = ( 74638 × 74642) / 2
LCM(74638,74642) = 5571129596 / 2
LCM(74638,74642) = 2785564798

Least Common Multiple (LCM) of 74638 and 74642 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 74638 and 74642. First we will calculate the prime factors of 74638 and 74642.

Prime Factorization of 74638

Prime Factorization of 74642

Now multiplying the highest exponent prime factors to calculate the LCM of 74638 and 74642.

LCM(74638,74642) = 2¹ × 67¹ × 557¹ × 37321¹
LCM(74638,74642) = 2785564798