What is the Least Common Multiple of 9770 and 9790?

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 9770 and 9790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9770 and 9790, than apply into the LCM equation.

GCF(9770,9790) = 10
LCM(9770,9790) = ( 9770 × 9790) / 10
LCM(9770,9790) = 95648300 / 10
LCM(9770,9790) = 9564830

Least Common Multiple (LCM) of 9770 and 9790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9770 and 9790. First we will calculate the prime factors of 9770 and 9790.

Prime Factorization of 9770

Prime Factorization of 9790

Now multiplying the highest exponent prime factors to calculate the LCM of 9770 and 9790.

LCM(9770,9790) = 2¹ × 5¹ × 977¹ × 11¹ × 89¹
LCM(9770,9790) = 9564830