What is the Least Common Multiple of 1078 and 1087?

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 1078 and 1087 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1078 and 1087, than apply into the LCM equation.

GCF(1078,1087) = 1
LCM(1078,1087) = ( 1078 × 1087) / 1
LCM(1078,1087) = 1171786 / 1
LCM(1078,1087) = 1171786

Least Common Multiple (LCM) of 1078 and 1087 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1078 and 1087. First we will calculate the prime factors of 1078 and 1087.

Prime Factorization of 1078

Prime Factorization of 1087

Now multiplying the highest exponent prime factors to calculate the LCM of 1078 and 1087.

LCM(1078,1087) = 2¹ × 7² × 11¹ × 1087¹
LCM(1078,1087) = 1171786