What is the Least Common Multiple of 91408 and 91422?

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 91408 and 91422 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91408 and 91422, than apply into the LCM equation.

GCF(91408,91422) = 2
LCM(91408,91422) = ( 91408 × 91422) / 2
LCM(91408,91422) = 8356702176 / 2
LCM(91408,91422) = 4178351088

Least Common Multiple (LCM) of 91408 and 91422 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91408 and 91422. First we will calculate the prime factors of 91408 and 91422.

Prime Factorization of 91408

Prime Factorization of 91422

Now multiplying the highest exponent prime factors to calculate the LCM of 91408 and 91422.

LCM(91408,91422) = 2⁴ × 29¹ × 197¹ × 3³ × 1693¹
LCM(91408,91422) = 4178351088