What is the Least Common Multiple of 31561 and 31581?

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 31561 and 31581 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31561 and 31581, than apply into the LCM equation.

GCF(31561,31581) = 1
LCM(31561,31581) = ( 31561 × 31581) / 1
LCM(31561,31581) = 996727941 / 1
LCM(31561,31581) = 996727941

Least Common Multiple (LCM) of 31561 and 31581 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31561 and 31581. First we will calculate the prime factors of 31561 and 31581.

Prime Factorization of 31561

Prime Factorization of 31581

Now multiplying the highest exponent prime factors to calculate the LCM of 31561 and 31581.

LCM(31561,31581) = 37¹ × 853¹ × 3² × 11² × 29¹
LCM(31561,31581) = 996727941