What is the Least Common Multiple of 30990 and 30998?

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 30990 and 30998 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30990 and 30998, than apply into the LCM equation.

GCF(30990,30998) = 2
LCM(30990,30998) = ( 30990 × 30998) / 2
LCM(30990,30998) = 960628020 / 2
LCM(30990,30998) = 480314010

Least Common Multiple (LCM) of 30990 and 30998 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30990 and 30998. First we will calculate the prime factors of 30990 and 30998.

Prime Factorization of 30990

Prime Factorization of 30998

Now multiplying the highest exponent prime factors to calculate the LCM of 30990 and 30998.

LCM(30990,30998) = 2¹ × 3¹ × 5¹ × 1033¹ × 11¹ × 1409¹
LCM(30990,30998) = 480314010