What is the Least Common Multiple of 78162 and 78172?

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 78162 and 78172 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78162 and 78172, than apply into the LCM equation.

GCF(78162,78172) = 2
LCM(78162,78172) = ( 78162 × 78172) / 2
LCM(78162,78172) = 6110079864 / 2
LCM(78162,78172) = 3055039932

Least Common Multiple (LCM) of 78162 and 78172 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78162 and 78172. First we will calculate the prime factors of 78162 and 78172.

Prime Factorization of 78162

Prime Factorization of 78172

Now multiplying the highest exponent prime factors to calculate the LCM of 78162 and 78172.

LCM(78162,78172) = 2² × 3¹ × 7¹ × 1861¹ × 19543¹
LCM(78162,78172) = 3055039932