What is the Least Common Multiple of 7978 and 7993?

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 7978 and 7993 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7978 and 7993, than apply into the LCM equation.

GCF(7978,7993) = 1
LCM(7978,7993) = ( 7978 × 7993) / 1
LCM(7978,7993) = 63768154 / 1
LCM(7978,7993) = 63768154

Least Common Multiple (LCM) of 7978 and 7993 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7978 and 7993. First we will calculate the prime factors of 7978 and 7993.

Prime Factorization of 7978

Prime Factorization of 7993

Now multiplying the highest exponent prime factors to calculate the LCM of 7978 and 7993.

LCM(7978,7993) = 2¹ × 3989¹ × 7993¹
LCM(7978,7993) = 63768154