What is the Least Common Multiple of 4280 and 4285?

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 4280 and 4285 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4280 and 4285, than apply into the LCM equation.

GCF(4280,4285) = 5
LCM(4280,4285) = ( 4280 × 4285) / 5
LCM(4280,4285) = 18339800 / 5
LCM(4280,4285) = 3667960

Least Common Multiple (LCM) of 4280 and 4285 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4280 and 4285. First we will calculate the prime factors of 4280 and 4285.

Prime Factorization of 4280

Prime Factorization of 4285

Now multiplying the highest exponent prime factors to calculate the LCM of 4280 and 4285.

LCM(4280,4285) = 2³ × 5¹ × 107¹ × 857¹
LCM(4280,4285) = 3667960