What is the Least Common Multiple of 7971 and 7977?

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 7971 and 7977 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7971 and 7977, than apply into the LCM equation.

GCF(7971,7977) = 3
LCM(7971,7977) = ( 7971 × 7977) / 3
LCM(7971,7977) = 63584667 / 3
LCM(7971,7977) = 21194889

Least Common Multiple (LCM) of 7971 and 7977 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7971 and 7977. First we will calculate the prime factors of 7971 and 7977.

Prime Factorization of 7971

Prime Factorization of 7977

Now multiplying the highest exponent prime factors to calculate the LCM of 7971 and 7977.

LCM(7971,7977) = 3¹ × 2657¹ × 2659¹
LCM(7971,7977) = 21194889