What is the Least Common Multiple of 86978 and 86986?

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 86978 and 86986 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 86978 and 86986, than apply into the LCM equation.

GCF(86978,86986) = 2
LCM(86978,86986) = ( 86978 × 86986) / 2
LCM(86978,86986) = 7565868308 / 2
LCM(86978,86986) = 3782934154

Least Common Multiple (LCM) of 86978 and 86986 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 86978 and 86986. First we will calculate the prime factors of 86978 and 86986.

Prime Factorization of 86978

Prime Factorization of 86986

Now multiplying the highest exponent prime factors to calculate the LCM of 86978 and 86986.

LCM(86978,86986) = 2¹ × 157¹ × 277¹ × 23¹ × 31¹ × 61¹
LCM(86978,86986) = 3782934154