What is the Least Common Multiple of 19961 and 19973?

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 19961 and 19973 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19961 and 19973, than apply into the LCM equation.

GCF(19961,19973) = 1
LCM(19961,19973) = ( 19961 × 19973) / 1
LCM(19961,19973) = 398681053 / 1
LCM(19961,19973) = 398681053

Least Common Multiple (LCM) of 19961 and 19973 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19961 and 19973. First we will calculate the prime factors of 19961 and 19973.

Prime Factorization of 19961

Prime Factorization of 19973

Now multiplying the highest exponent prime factors to calculate the LCM of 19961 and 19973.

LCM(19961,19973) = 19961¹ × 19973¹
LCM(19961,19973) = 398681053