What is the Least Common Multiple of 15538 and 15556?

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 15538 and 15556 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15538 and 15556, than apply into the LCM equation.

GCF(15538,15556) = 2
LCM(15538,15556) = ( 15538 × 15556) / 2
LCM(15538,15556) = 241709128 / 2
LCM(15538,15556) = 120854564

Least Common Multiple (LCM) of 15538 and 15556 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15538 and 15556. First we will calculate the prime factors of 15538 and 15556.

Prime Factorization of 15538

Prime Factorization of 15556

Now multiplying the highest exponent prime factors to calculate the LCM of 15538 and 15556.

LCM(15538,15556) = 2² × 17¹ × 457¹ × 3889¹
LCM(15538,15556) = 120854564