What is the Least Common Multiple of 31156 and 31172?

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 31156 and 31172 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31156 and 31172, than apply into the LCM equation.

GCF(31156,31172) = 4
LCM(31156,31172) = ( 31156 × 31172) / 4
LCM(31156,31172) = 971194832 / 4
LCM(31156,31172) = 242798708

Least Common Multiple (LCM) of 31156 and 31172 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31156 and 31172. First we will calculate the prime factors of 31156 and 31172.

Prime Factorization of 31156

Prime Factorization of 31172

Now multiplying the highest exponent prime factors to calculate the LCM of 31156 and 31172.

LCM(31156,31172) = 2² × 7789¹ × 7793¹
LCM(31156,31172) = 242798708