What is the Least Common Multiple of 7721 and 7738?

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 7721 and 7738 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7721 and 7738, than apply into the LCM equation.

GCF(7721,7738) = 1
LCM(7721,7738) = ( 7721 × 7738) / 1
LCM(7721,7738) = 59745098 / 1
LCM(7721,7738) = 59745098

Least Common Multiple (LCM) of 7721 and 7738 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7721 and 7738. First we will calculate the prime factors of 7721 and 7738.

Prime Factorization of 7721

Prime Factorization of 7738

Now multiplying the highest exponent prime factors to calculate the LCM of 7721 and 7738.

LCM(7721,7738) = 7¹ × 1103¹ × 2¹ × 53¹ × 73¹
LCM(7721,7738) = 59745098