What is the Least Common Multiple of 31129 and 31143?

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 31129 and 31143 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31129 and 31143, than apply into the LCM equation.

GCF(31129,31143) = 7
LCM(31129,31143) = ( 31129 × 31143) / 7
LCM(31129,31143) = 969450447 / 7
LCM(31129,31143) = 138492921

Least Common Multiple (LCM) of 31129 and 31143 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31129 and 31143. First we will calculate the prime factors of 31129 and 31143.

Prime Factorization of 31129

Prime Factorization of 31143

Now multiplying the highest exponent prime factors to calculate the LCM of 31129 and 31143.

LCM(31129,31143) = 7¹ × 4447¹ × 3¹ × 1483¹
LCM(31129,31143) = 138492921