What is the Least Common Multiple of 71904 and 71921?

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 71904 and 71921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71904 and 71921, than apply into the LCM equation.

GCF(71904,71921) = 1
LCM(71904,71921) = ( 71904 × 71921) / 1
LCM(71904,71921) = 5171407584 / 1
LCM(71904,71921) = 5171407584

Least Common Multiple (LCM) of 71904 and 71921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71904 and 71921. First we will calculate the prime factors of 71904 and 71921.

Prime Factorization of 71904

Prime Factorization of 71921

Now multiplying the highest exponent prime factors to calculate the LCM of 71904 and 71921.

LCM(71904,71921) = 2⁵ × 3¹ × 7¹ × 107¹ × 23¹ × 53¹ × 59¹
LCM(71904,71921) = 5171407584