What is the Least Common Multiple of 69408 and 69428?

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 69408 and 69428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 69408 and 69428, than apply into the LCM equation.

GCF(69408,69428) = 4
LCM(69408,69428) = ( 69408 × 69428) / 4
LCM(69408,69428) = 4818858624 / 4
LCM(69408,69428) = 1204714656

Least Common Multiple (LCM) of 69408 and 69428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 69408 and 69428. First we will calculate the prime factors of 69408 and 69428.

Prime Factorization of 69408

Prime Factorization of 69428

Now multiplying the highest exponent prime factors to calculate the LCM of 69408 and 69428.

LCM(69408,69428) = 2⁵ × 3² × 241¹ × 17¹ × 1021¹
LCM(69408,69428) = 1204714656