What is the Least Common Multiple of 278 and 293?

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 278 and 293 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 278 and 293, than apply into the LCM equation.

GCF(278,293) = 1
LCM(278,293) = ( 278 × 293) / 1
LCM(278,293) = 81454 / 1
LCM(278,293) = 81454

Least Common Multiple (LCM) of 278 and 293 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 278 and 293. First we will calculate the prime factors of 278 and 293.

Prime Factorization of 278

Prime Factorization of 293

Now multiplying the highest exponent prime factors to calculate the LCM of 278 and 293.

LCM(278,293) = 2¹ × 139¹ × 293¹
LCM(278,293) = 81454