What is the Least Common Multiple of 6981 and 6989?

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 6981 and 6989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6981 and 6989, than apply into the LCM equation.

GCF(6981,6989) = 1
LCM(6981,6989) = ( 6981 × 6989) / 1
LCM(6981,6989) = 48790209 / 1
LCM(6981,6989) = 48790209

Least Common Multiple (LCM) of 6981 and 6989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6981 and 6989. First we will calculate the prime factors of 6981 and 6989.

Prime Factorization of 6981

Prime Factorization of 6989

Now multiplying the highest exponent prime factors to calculate the LCM of 6981 and 6989.

LCM(6981,6989) = 3¹ × 13¹ × 179¹ × 29¹ × 241¹
LCM(6981,6989) = 48790209