What is the Least Common Multiple of 83970 and 83978?

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 83970 and 83978 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 83970 and 83978, than apply into the LCM equation.

GCF(83970,83978) = 2
LCM(83970,83978) = ( 83970 × 83978) / 2
LCM(83970,83978) = 7051632660 / 2
LCM(83970,83978) = 3525816330

Least Common Multiple (LCM) of 83970 and 83978 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 83970 and 83978. First we will calculate the prime factors of 83970 and 83978.

Prime Factorization of 83970

Prime Factorization of 83978

Now multiplying the highest exponent prime factors to calculate the LCM of 83970 and 83978.

LCM(83970,83978) = 2¹ × 3³ × 5¹ × 311¹ × 199¹ × 211¹
LCM(83970,83978) = 3525816330