What is the Least Common Multiple of 40380 and 40388?

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 40380 and 40388 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40380 and 40388, than apply into the LCM equation.

GCF(40380,40388) = 4
LCM(40380,40388) = ( 40380 × 40388) / 4
LCM(40380,40388) = 1630867440 / 4
LCM(40380,40388) = 407716860

Least Common Multiple (LCM) of 40380 and 40388 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40380 and 40388. First we will calculate the prime factors of 40380 and 40388.

Prime Factorization of 40380

Prime Factorization of 40388

Now multiplying the highest exponent prime factors to calculate the LCM of 40380 and 40388.

LCM(40380,40388) = 2² × 3¹ × 5¹ × 673¹ × 23¹ × 439¹
LCM(40380,40388) = 407716860