What is the Least Common Multiple of 15920 and 15931?

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 15920 and 15931 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15920 and 15931, than apply into the LCM equation.

GCF(15920,15931) = 1
LCM(15920,15931) = ( 15920 × 15931) / 1
LCM(15920,15931) = 253621520 / 1
LCM(15920,15931) = 253621520

Least Common Multiple (LCM) of 15920 and 15931 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15920 and 15931. First we will calculate the prime factors of 15920 and 15931.

Prime Factorization of 15920

Prime Factorization of 15931

Now multiplying the highest exponent prime factors to calculate the LCM of 15920 and 15931.

LCM(15920,15931) = 2⁴ × 5¹ × 199¹ × 89¹ × 179¹
LCM(15920,15931) = 253621520