What is the Least Common Multiple of 19611 and 19621?

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 19611 and 19621 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19611 and 19621, than apply into the LCM equation.

GCF(19611,19621) = 1
LCM(19611,19621) = ( 19611 × 19621) / 1
LCM(19611,19621) = 384787431 / 1
LCM(19611,19621) = 384787431

Least Common Multiple (LCM) of 19611 and 19621 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19611 and 19621. First we will calculate the prime factors of 19611 and 19621.

Prime Factorization of 19611

Prime Factorization of 19621

Now multiplying the highest exponent prime factors to calculate the LCM of 19611 and 19621.

LCM(19611,19621) = 3² × 2179¹ × 7¹ × 2803¹
LCM(19611,19621) = 384787431