What is the Least Common Multiple of 456 and 473?

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 456 and 473 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 456 and 473, than apply into the LCM equation.

GCF(456,473) = 1
LCM(456,473) = ( 456 × 473) / 1
LCM(456,473) = 215688 / 1
LCM(456,473) = 215688

Least Common Multiple (LCM) of 456 and 473 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 456 and 473. First we will calculate the prime factors of 456 and 473.

Prime Factorization of 456

Prime Factorization of 473

Now multiplying the highest exponent prime factors to calculate the LCM of 456 and 473.

LCM(456,473) = 2³ × 3¹ × 19¹ × 11¹ × 43¹
LCM(456,473) = 215688