What is the Least Common Multiple of 15905 and 15921?

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 15905 and 15921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15905 and 15921, than apply into the LCM equation.

GCF(15905,15921) = 1
LCM(15905,15921) = ( 15905 × 15921) / 1
LCM(15905,15921) = 253223505 / 1
LCM(15905,15921) = 253223505

Least Common Multiple (LCM) of 15905 and 15921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15905 and 15921. First we will calculate the prime factors of 15905 and 15921.

Prime Factorization of 15905

Prime Factorization of 15921

Now multiplying the highest exponent prime factors to calculate the LCM of 15905 and 15921.

LCM(15905,15921) = 5¹ × 3181¹ × 3² × 29¹ × 61¹
LCM(15905,15921) = 253223505