What is the Least Common Multiple of 10991 and 10997?

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 10991 and 10997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10991 and 10997, than apply into the LCM equation.

GCF(10991,10997) = 1
LCM(10991,10997) = ( 10991 × 10997) / 1
LCM(10991,10997) = 120868027 / 1
LCM(10991,10997) = 120868027

Least Common Multiple (LCM) of 10991 and 10997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10991 and 10997. First we will calculate the prime factors of 10991 and 10997.

Prime Factorization of 10991

Prime Factorization of 10997

Now multiplying the highest exponent prime factors to calculate the LCM of 10991 and 10997.

LCM(10991,10997) = 29¹ × 379¹ × 7¹ × 1571¹
LCM(10991,10997) = 120868027