What is the Least Common Multiple of 65981 and 65991?

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 65981 and 65991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65981 and 65991, than apply into the LCM equation.

GCF(65981,65991) = 1
LCM(65981,65991) = ( 65981 × 65991) / 1
LCM(65981,65991) = 4354152171 / 1
LCM(65981,65991) = 4354152171

Least Common Multiple (LCM) of 65981 and 65991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65981 and 65991. First we will calculate the prime factors of 65981 and 65991.

Prime Factorization of 65981

Prime Factorization of 65991

Now multiplying the highest exponent prime factors to calculate the LCM of 65981 and 65991.

LCM(65981,65991) = 65981¹ × 3¹ × 21997¹
LCM(65981,65991) = 4354152171