What is the Least Common Multiple of 79280 and 79285?

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 79280 and 79285 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 79280 and 79285, than apply into the LCM equation.

GCF(79280,79285) = 5
LCM(79280,79285) = ( 79280 × 79285) / 5
LCM(79280,79285) = 6285714800 / 5
LCM(79280,79285) = 1257142960

Least Common Multiple (LCM) of 79280 and 79285 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 79280 and 79285. First we will calculate the prime factors of 79280 and 79285.

Prime Factorization of 79280

Prime Factorization of 79285

Now multiplying the highest exponent prime factors to calculate the LCM of 79280 and 79285.

LCM(79280,79285) = 2⁴ × 5¹ × 991¹ × 101¹ × 157¹
LCM(79280,79285) = 1257142960