What is the Least Common Multiple of 7987 and 7999?

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 7987 and 7999 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7987 and 7999, than apply into the LCM equation.

GCF(7987,7999) = 1
LCM(7987,7999) = ( 7987 × 7999) / 1
LCM(7987,7999) = 63888013 / 1
LCM(7987,7999) = 63888013

Least Common Multiple (LCM) of 7987 and 7999 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7987 and 7999. First we will calculate the prime factors of 7987 and 7999.

Prime Factorization of 7987

Prime Factorization of 7999

Now multiplying the highest exponent prime factors to calculate the LCM of 7987 and 7999.

LCM(7987,7999) = 7² × 163¹ × 19¹ × 421¹
LCM(7987,7999) = 63888013