What is the Least Common Multiple of 39890 and 39896?

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 39890 and 39896 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39890 and 39896, than apply into the LCM equation.

GCF(39890,39896) = 2
LCM(39890,39896) = ( 39890 × 39896) / 2
LCM(39890,39896) = 1591451440 / 2
LCM(39890,39896) = 795725720

Least Common Multiple (LCM) of 39890 and 39896 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39890 and 39896. First we will calculate the prime factors of 39890 and 39896.

Prime Factorization of 39890

Prime Factorization of 39896

Now multiplying the highest exponent prime factors to calculate the LCM of 39890 and 39896.

LCM(39890,39896) = 2³ × 5¹ × 3989¹ × 4987¹
LCM(39890,39896) = 795725720