What is the Least Common Multiple of 11440 and 11456?

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 11440 and 11456 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11440 and 11456, than apply into the LCM equation.

GCF(11440,11456) = 16
LCM(11440,11456) = ( 11440 × 11456) / 16
LCM(11440,11456) = 131056640 / 16
LCM(11440,11456) = 8191040

Least Common Multiple (LCM) of 11440 and 11456 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11440 and 11456. First we will calculate the prime factors of 11440 and 11456.

Prime Factorization of 11440

Prime Factorization of 11456

Now multiplying the highest exponent prime factors to calculate the LCM of 11440 and 11456.

LCM(11440,11456) = 2⁶ × 5¹ × 11¹ × 13¹ × 179¹
LCM(11440,11456) = 8191040