What is the Least Common Multiple of 31770 and 31781?

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 31770 and 31781 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31770 and 31781, than apply into the LCM equation.

GCF(31770,31781) = 1
LCM(31770,31781) = ( 31770 × 31781) / 1
LCM(31770,31781) = 1009682370 / 1
LCM(31770,31781) = 1009682370

Least Common Multiple (LCM) of 31770 and 31781 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31770 and 31781. First we will calculate the prime factors of 31770 and 31781.

Prime Factorization of 31770

Prime Factorization of 31781

Now multiplying the highest exponent prime factors to calculate the LCM of 31770 and 31781.

LCM(31770,31781) = 2¹ × 3² × 5¹ × 353¹ × 61¹ × 521¹
LCM(31770,31781) = 1009682370