What is the Least Common Multiple of 72643 and 72656?

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 72643 and 72656 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72643 and 72656, than apply into the LCM equation.

GCF(72643,72656) = 1
LCM(72643,72656) = ( 72643 × 72656) / 1
LCM(72643,72656) = 5277949808 / 1
LCM(72643,72656) = 5277949808

Least Common Multiple (LCM) of 72643 and 72656 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72643 and 72656. First we will calculate the prime factors of 72643 and 72656.

Prime Factorization of 72643

Prime Factorization of 72656

Now multiplying the highest exponent prime factors to calculate the LCM of 72643 and 72656.

LCM(72643,72656) = 72643¹ × 2⁴ × 19¹ × 239¹
LCM(72643,72656) = 5277949808