What is the Least Common Multiple of 75640 and 75655?

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 75640 and 75655 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 75640 and 75655, than apply into the LCM equation.

GCF(75640,75655) = 5
LCM(75640,75655) = ( 75640 × 75655) / 5
LCM(75640,75655) = 5722544200 / 5
LCM(75640,75655) = 1144508840

Least Common Multiple (LCM) of 75640 and 75655 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 75640 and 75655. First we will calculate the prime factors of 75640 and 75655.

Prime Factorization of 75640

Prime Factorization of 75655

Now multiplying the highest exponent prime factors to calculate the LCM of 75640 and 75655.

LCM(75640,75655) = 2³ × 5¹ × 31¹ × 61¹ × 15131¹
LCM(75640,75655) = 1144508840