What is the Least Common Multiple of 19770 and 19779?

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 19770 and 19779 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19770 and 19779, than apply into the LCM equation.

GCF(19770,19779) = 3
LCM(19770,19779) = ( 19770 × 19779) / 3
LCM(19770,19779) = 391030830 / 3
LCM(19770,19779) = 130343610

Least Common Multiple (LCM) of 19770 and 19779 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19770 and 19779. First we will calculate the prime factors of 19770 and 19779.

Prime Factorization of 19770

Prime Factorization of 19779

Now multiplying the highest exponent prime factors to calculate the LCM of 19770 and 19779.

LCM(19770,19779) = 2¹ × 3¹ × 5¹ × 659¹ × 19¹ × 347¹
LCM(19770,19779) = 130343610