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What is the Least Common Multiple of 75240 and 75260?

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 (LCM) of 75240 and 75260 is 283128120.

LCM(75240,75260) = 283128120

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Least Common Multiple of 75240 and 75260 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 75240 and 75260, than apply into the LCM equation.

GCF(75240,75260) = 20
LCM(75240,75260) = ( 75240 × 75260) / 20
LCM(75240,75260) = 5662562400 / 20
LCM(75240,75260) = 283128120

Least Common Multiple (LCM) of 75240 and 75260 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 75240 and 75260. First we will calculate the prime factors of 75240 and 75260.

Prime Factorization of 75240

Prime factors of 75240 are 2, 3, 5, 11, 19. Prime factorization of 75240 in exponential form is:

75240 = 23 × 32 × 51 × 111 × 191

Prime Factorization of 75260

Prime factors of 75260 are 2, 5, 53, 71. Prime factorization of 75260 in exponential form is:

75260 = 22 × 51 × 531 × 711

Now multiplying the highest exponent prime factors to calculate the LCM of 75240 and 75260.

LCM(75240,75260) = 23 × 32 × 51 × 111 × 191 × 531 × 711
LCM(75240,75260) = 283128120