What is the Least Common Multiple of 10705 and 10720?

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 10705 and 10720 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 10705 and 10720, than apply into the LCM equation.

GCF(10705,10720) = 5
LCM(10705,10720) = ( 10705 × 10720) / 5
LCM(10705,10720) = 114757600 / 5
LCM(10705,10720) = 22951520

Least Common Multiple (LCM) of 10705 and 10720 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 10705 and 10720. First we will calculate the prime factors of 10705 and 10720.

Prime Factorization of 10705

Prime Factorization of 10720

Now multiplying the highest exponent prime factors to calculate the LCM of 10705 and 10720.

LCM(10705,10720) = 5¹ × 2141¹ × 2⁵ × 67¹
LCM(10705,10720) = 22951520