What is the Least Common Multiple of 74760 and 74780?

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 74760 and 74780 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74760 and 74780, than apply into the LCM equation.

GCF(74760,74780) = 20
LCM(74760,74780) = ( 74760 × 74780) / 20
LCM(74760,74780) = 5590552800 / 20
LCM(74760,74780) = 279527640

Least Common Multiple (LCM) of 74760 and 74780 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 74760 and 74780. First we will calculate the prime factors of 74760 and 74780.

Prime Factorization of 74760

Prime Factorization of 74780

Now multiplying the highest exponent prime factors to calculate the LCM of 74760 and 74780.

LCM(74760,74780) = 2³ × 3¹ × 5¹ × 7¹ × 89¹ × 3739¹
LCM(74760,74780) = 279527640