What is the Least Common Multiple of 9970 and 9988?

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 9970 and 9988 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9970 and 9988, than apply into the LCM equation.

GCF(9970,9988) = 2
LCM(9970,9988) = ( 9970 × 9988) / 2
LCM(9970,9988) = 99580360 / 2
LCM(9970,9988) = 49790180

Least Common Multiple (LCM) of 9970 and 9988 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9970 and 9988. First we will calculate the prime factors of 9970 and 9988.

Prime Factorization of 9970

Prime Factorization of 9988

Now multiplying the highest exponent prime factors to calculate the LCM of 9970 and 9988.

LCM(9970,9988) = 2² × 5¹ × 997¹ × 11¹ × 227¹
LCM(9970,9988) = 49790180