What is the Least Common Multiple of 42540 and 42547?

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 42540 and 42547 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42540 and 42547, than apply into the LCM equation.

GCF(42540,42547) = 1
LCM(42540,42547) = ( 42540 × 42547) / 1
LCM(42540,42547) = 1809949380 / 1
LCM(42540,42547) = 1809949380

Least Common Multiple (LCM) of 42540 and 42547 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42540 and 42547. First we will calculate the prime factors of 42540 and 42547.

Prime Factorization of 42540

Prime Factorization of 42547

Now multiplying the highest exponent prime factors to calculate the LCM of 42540 and 42547.

LCM(42540,42547) = 2² × 3¹ × 5¹ × 709¹ × 157¹ × 271¹
LCM(42540,42547) = 1809949380