What is the Least Common Multiple of 71720 and 71738?

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 71720 and 71738 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71720 and 71738, than apply into the LCM equation.

GCF(71720,71738) = 2
LCM(71720,71738) = ( 71720 × 71738) / 2
LCM(71720,71738) = 5145049360 / 2
LCM(71720,71738) = 2572524680

Least Common Multiple (LCM) of 71720 and 71738 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71720 and 71738. First we will calculate the prime factors of 71720 and 71738.

Prime Factorization of 71720

Prime Factorization of 71738

Now multiplying the highest exponent prime factors to calculate the LCM of 71720 and 71738.

LCM(71720,71738) = 2³ × 5¹ × 11¹ × 163¹ × 35869¹
LCM(71720,71738) = 2572524680