What is the Least Common Multiple of 329 and 343?

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 329 and 343 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 329 and 343, than apply into the LCM equation.

GCF(329,343) = 7
LCM(329,343) = ( 329 × 343) / 7
LCM(329,343) = 112847 / 7
LCM(329,343) = 16121

Least Common Multiple (LCM) of 329 and 343 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 329 and 343. First we will calculate the prime factors of 329 and 343.

Prime Factorization of 329

Prime Factorization of 343

Now multiplying the highest exponent prime factors to calculate the LCM of 329 and 343.

LCM(329,343) = 7³ × 47¹
LCM(329,343) = 16121