What is the Least Common Multiple of 16981 and 16985?

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 16981 and 16985 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16981 and 16985, than apply into the LCM equation.

GCF(16981,16985) = 1
LCM(16981,16985) = ( 16981 × 16985) / 1
LCM(16981,16985) = 288422285 / 1
LCM(16981,16985) = 288422285

Least Common Multiple (LCM) of 16981 and 16985 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16981 and 16985. First we will calculate the prime factors of 16981 and 16985.

Prime Factorization of 16981

Prime Factorization of 16985

Now multiplying the highest exponent prime factors to calculate the LCM of 16981 and 16985.

LCM(16981,16985) = 16981¹ × 5¹ × 43¹ × 79¹
LCM(16981,16985) = 288422285