What is the Least Common Multiple of 1008 and 1028?

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 1008 and 1028 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1008 and 1028, than apply into the LCM equation.

GCF(1008,1028) = 4
LCM(1008,1028) = ( 1008 × 1028) / 4
LCM(1008,1028) = 1036224 / 4
LCM(1008,1028) = 259056

Least Common Multiple (LCM) of 1008 and 1028 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1008 and 1028. First we will calculate the prime factors of 1008 and 1028.

Prime Factorization of 1008

Prime Factorization of 1028

Now multiplying the highest exponent prime factors to calculate the LCM of 1008 and 1028.

LCM(1008,1028) = 2⁴ × 3² × 7¹ × 257¹
LCM(1008,1028) = 259056