What is the Least Common Multiple of 31990 and 32002?

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 31990 and 32002 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31990 and 32002, than apply into the LCM equation.

GCF(31990,32002) = 2
LCM(31990,32002) = ( 31990 × 32002) / 2
LCM(31990,32002) = 1023743980 / 2
LCM(31990,32002) = 511871990

Least Common Multiple (LCM) of 31990 and 32002 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31990 and 32002. First we will calculate the prime factors of 31990 and 32002.

Prime Factorization of 31990

Prime Factorization of 32002

Now multiplying the highest exponent prime factors to calculate the LCM of 31990 and 32002.

LCM(31990,32002) = 2¹ × 5¹ × 7¹ × 457¹ × 16001¹
LCM(31990,32002) = 511871990