What is the Least Common Multiple of 31991 and 32009?

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 31991 and 32009 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31991 and 32009, than apply into the LCM equation.

GCF(31991,32009) = 1
LCM(31991,32009) = ( 31991 × 32009) / 1
LCM(31991,32009) = 1023999919 / 1
LCM(31991,32009) = 1023999919

Least Common Multiple (LCM) of 31991 and 32009 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31991 and 32009. First we will calculate the prime factors of 31991 and 32009.

Prime Factorization of 31991

Prime Factorization of 32009

Now multiplying the highest exponent prime factors to calculate the LCM of 31991 and 32009.

LCM(31991,32009) = 31991¹ × 32009¹
LCM(31991,32009) = 1023999919