What is the Least Common Multiple of 45440 and 45456?

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 45440 and 45456 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 45440 and 45456, than apply into the LCM equation.

GCF(45440,45456) = 16
LCM(45440,45456) = ( 45440 × 45456) / 16
LCM(45440,45456) = 2065520640 / 16
LCM(45440,45456) = 129095040

Least Common Multiple (LCM) of 45440 and 45456 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 45440 and 45456. First we will calculate the prime factors of 45440 and 45456.

Prime Factorization of 45440

Prime Factorization of 45456

Now multiplying the highest exponent prime factors to calculate the LCM of 45440 and 45456.

LCM(45440,45456) = 2⁷ × 5¹ × 71¹ × 3¹ × 947¹
LCM(45440,45456) = 129095040