What is the Least Common Multiple of 7221 and 7239?

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 7221 and 7239 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7221 and 7239, than apply into the LCM equation.

GCF(7221,7239) = 3
LCM(7221,7239) = ( 7221 × 7239) / 3
LCM(7221,7239) = 52272819 / 3
LCM(7221,7239) = 17424273

Least Common Multiple (LCM) of 7221 and 7239 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7221 and 7239. First we will calculate the prime factors of 7221 and 7239.

Prime Factorization of 7221

Prime Factorization of 7239

Now multiplying the highest exponent prime factors to calculate the LCM of 7221 and 7239.

LCM(7221,7239) = 3¹ × 29¹ × 83¹ × 19¹ × 127¹
LCM(7221,7239) = 17424273