What is the Least Common Multiple of 72638 and 72643?

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 72638 and 72643 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72638 and 72643, than apply into the LCM equation.

GCF(72638,72643) = 1
LCM(72638,72643) = ( 72638 × 72643) / 1
LCM(72638,72643) = 5276642234 / 1
LCM(72638,72643) = 5276642234

Least Common Multiple (LCM) of 72638 and 72643 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72638 and 72643. First we will calculate the prime factors of 72638 and 72643.

Prime Factorization of 72638

Prime Factorization of 72643

Now multiplying the highest exponent prime factors to calculate the LCM of 72638 and 72643.

LCM(72638,72643) = 2¹ × 36319¹ × 72643¹
LCM(72638,72643) = 5276642234