What is the Least Common Multiple of 19505 and 19520?

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 19505 and 19520 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19505 and 19520, than apply into the LCM equation.

GCF(19505,19520) = 5
LCM(19505,19520) = ( 19505 × 19520) / 5
LCM(19505,19520) = 380737600 / 5
LCM(19505,19520) = 76147520

Least Common Multiple (LCM) of 19505 and 19520 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19505 and 19520. First we will calculate the prime factors of 19505 and 19520.

Prime Factorization of 19505

Prime Factorization of 19520

Now multiplying the highest exponent prime factors to calculate the LCM of 19505 and 19520.

LCM(19505,19520) = 5¹ × 47¹ × 83¹ × 2⁶ × 61¹
LCM(19505,19520) = 76147520