What is the Least Common Multiple of 744 and 755?

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 744 and 755 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 744 and 755, than apply into the LCM equation.

GCF(744,755) = 1
LCM(744,755) = ( 744 × 755) / 1
LCM(744,755) = 561720 / 1
LCM(744,755) = 561720

Least Common Multiple (LCM) of 744 and 755 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 744 and 755. First we will calculate the prime factors of 744 and 755.

Prime Factorization of 744

Prime Factorization of 755

Now multiplying the highest exponent prime factors to calculate the LCM of 744 and 755.

LCM(744,755) = 2³ × 3¹ × 31¹ × 5¹ × 151¹
LCM(744,755) = 561720