What is the Least Common Multiple of 12040 and 12047?

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 12040 and 12047 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12040 and 12047, than apply into the LCM equation.

GCF(12040,12047) = 7
LCM(12040,12047) = ( 12040 × 12047) / 7
LCM(12040,12047) = 145045880 / 7
LCM(12040,12047) = 20720840

Least Common Multiple (LCM) of 12040 and 12047 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12040 and 12047. First we will calculate the prime factors of 12040 and 12047.

Prime Factorization of 12040

Prime Factorization of 12047

Now multiplying the highest exponent prime factors to calculate the LCM of 12040 and 12047.

LCM(12040,12047) = 2³ × 5¹ × 7¹ × 43¹ × 1721¹
LCM(12040,12047) = 20720840