What is the Least Common Multiple of 10981 and 10991?

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 10981 and 10991 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10981 and 10991, than apply into the LCM equation.

GCF(10981,10991) = 1
LCM(10981,10991) = ( 10981 × 10991) / 1
LCM(10981,10991) = 120692171 / 1
LCM(10981,10991) = 120692171

Least Common Multiple (LCM) of 10981 and 10991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10981 and 10991. First we will calculate the prime factors of 10981 and 10991.

Prime Factorization of 10981

Prime Factorization of 10991

Now multiplying the highest exponent prime factors to calculate the LCM of 10981 and 10991.

LCM(10981,10991) = 79¹ × 139¹ × 29¹ × 379¹
LCM(10981,10991) = 120692171