What is the Least Common Multiple of 7956 and 7971?

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 7956 and 7971 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7956 and 7971, than apply into the LCM equation.

GCF(7956,7971) = 3
LCM(7956,7971) = ( 7956 × 7971) / 3
LCM(7956,7971) = 63417276 / 3
LCM(7956,7971) = 21139092

Least Common Multiple (LCM) of 7956 and 7971 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7956 and 7971. First we will calculate the prime factors of 7956 and 7971.

Prime Factorization of 7956

Prime Factorization of 7971

Now multiplying the highest exponent prime factors to calculate the LCM of 7956 and 7971.

LCM(7956,7971) = 2² × 3² × 13¹ × 17¹ × 2657¹
LCM(7956,7971) = 21139092