What is the Least Common Multiple of 15438 and 15455?

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 15438 and 15455 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15438 and 15455, than apply into the LCM equation.

GCF(15438,15455) = 1
LCM(15438,15455) = ( 15438 × 15455) / 1
LCM(15438,15455) = 238594290 / 1
LCM(15438,15455) = 238594290

Least Common Multiple (LCM) of 15438 and 15455 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15438 and 15455. First we will calculate the prime factors of 15438 and 15455.

Prime Factorization of 15438

Prime Factorization of 15455

Now multiplying the highest exponent prime factors to calculate the LCM of 15438 and 15455.

LCM(15438,15455) = 2¹ × 3¹ × 31¹ × 83¹ × 5¹ × 11¹ × 281¹
LCM(15438,15455) = 238594290