What is the Least Common Multiple of 31470 and 31478?

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 31470 and 31478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31470 and 31478, than apply into the LCM equation.

GCF(31470,31478) = 2
LCM(31470,31478) = ( 31470 × 31478) / 2
LCM(31470,31478) = 990612660 / 2
LCM(31470,31478) = 495306330

Least Common Multiple (LCM) of 31470 and 31478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31470 and 31478. First we will calculate the prime factors of 31470 and 31478.

Prime Factorization of 31470

Prime Factorization of 31478

Now multiplying the highest exponent prime factors to calculate the LCM of 31470 and 31478.

LCM(31470,31478) = 2¹ × 3¹ × 5¹ × 1049¹ × 15739¹
LCM(31470,31478) = 495306330