What is the Least Common Multiple of 19745 and 19755?

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 19745 and 19755 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19745 and 19755, than apply into the LCM equation.

GCF(19745,19755) = 5
LCM(19745,19755) = ( 19745 × 19755) / 5
LCM(19745,19755) = 390062475 / 5
LCM(19745,19755) = 78012495

Least Common Multiple (LCM) of 19745 and 19755 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19745 and 19755. First we will calculate the prime factors of 19745 and 19755.

Prime Factorization of 19745

Prime Factorization of 19755

Now multiplying the highest exponent prime factors to calculate the LCM of 19745 and 19755.

LCM(19745,19755) = 5¹ × 11¹ × 359¹ × 3² × 439¹
LCM(19745,19755) = 78012495