What is the Least Common Multiple of 81998 and 82004?

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 81998 and 82004 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81998 and 82004, than apply into the LCM equation.

GCF(81998,82004) = 2
LCM(81998,82004) = ( 81998 × 82004) / 2
LCM(81998,82004) = 6724163992 / 2
LCM(81998,82004) = 3362081996

Least Common Multiple (LCM) of 81998 and 82004 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81998 and 82004. First we will calculate the prime factors of 81998 and 82004.

Prime Factorization of 81998

Prime Factorization of 82004

Now multiplying the highest exponent prime factors to calculate the LCM of 81998 and 82004.

LCM(81998,82004) = 2² × 7¹ × 5857¹ × 13¹ × 19¹ × 83¹
LCM(81998,82004) = 3362081996