What is the Least Common Multiple of 30989 and 31003?

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 30989 and 31003 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30989 and 31003, than apply into the LCM equation.

GCF(30989,31003) = 7
LCM(30989,31003) = ( 30989 × 31003) / 7
LCM(30989,31003) = 960751967 / 7
LCM(30989,31003) = 137250281

Least Common Multiple (LCM) of 30989 and 31003 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30989 and 31003. First we will calculate the prime factors of 30989 and 31003.

Prime Factorization of 30989

Prime Factorization of 31003

Now multiplying the highest exponent prime factors to calculate the LCM of 30989 and 31003.

LCM(30989,31003) = 7¹ × 19¹ × 233¹ × 43¹ × 103¹
LCM(30989,31003) = 137250281