What is the Least Common Multiple of 2390 and 2398?

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 2390 and 2398 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2390 and 2398, than apply into the LCM equation.

GCF(2390,2398) = 2
LCM(2390,2398) = ( 2390 × 2398) / 2
LCM(2390,2398) = 5731220 / 2
LCM(2390,2398) = 2865610

Least Common Multiple (LCM) of 2390 and 2398 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2390 and 2398. First we will calculate the prime factors of 2390 and 2398.

Prime Factorization of 2390

Prime Factorization of 2398

Now multiplying the highest exponent prime factors to calculate the LCM of 2390 and 2398.

LCM(2390,2398) = 2¹ × 5¹ × 239¹ × 11¹ × 109¹
LCM(2390,2398) = 2865610