What is the Least Common Multiple of 7989 and 8001?

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 7989 and 8001 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7989 and 8001, than apply into the LCM equation.

GCF(7989,8001) = 3
LCM(7989,8001) = ( 7989 × 8001) / 3
LCM(7989,8001) = 63919989 / 3
LCM(7989,8001) = 21306663

Least Common Multiple (LCM) of 7989 and 8001 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7989 and 8001. First we will calculate the prime factors of 7989 and 8001.

Prime Factorization of 7989

Prime Factorization of 8001

Now multiplying the highest exponent prime factors to calculate the LCM of 7989 and 8001.

LCM(7989,8001) = 3² × 2663¹ × 7¹ × 127¹
LCM(7989,8001) = 21306663