What is the Least Common Multiple of 42531 and 42538?

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 42531 and 42538 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42531 and 42538, than apply into the LCM equation.

GCF(42531,42538) = 1
LCM(42531,42538) = ( 42531 × 42538) / 1
LCM(42531,42538) = 1809183678 / 1
LCM(42531,42538) = 1809183678

Least Common Multiple (LCM) of 42531 and 42538 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42531 and 42538. First we will calculate the prime factors of 42531 and 42538.

Prime Factorization of 42531

Prime Factorization of 42538

Now multiplying the highest exponent prime factors to calculate the LCM of 42531 and 42538.

LCM(42531,42538) = 3¹ × 14177¹ × 2¹ × 21269¹
LCM(42531,42538) = 1809183678