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What is the Least Common Multiple of 7800 and 7808?

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 7800 and 7808 is 7612800.

LCM(7800,7808) = 7612800

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Least Common Multiple of 7800 and 7808 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7800 and 7808, than apply into the LCM equation.

GCF(7800,7808) = 8
LCM(7800,7808) = ( 7800 × 7808) / 8
LCM(7800,7808) = 60902400 / 8
LCM(7800,7808) = 7612800

Least Common Multiple (LCM) of 7800 and 7808 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7800 and 7808. First we will calculate the prime factors of 7800 and 7808.

Prime Factorization of 7800

Prime factors of 7800 are 2, 3, 5, 13. Prime factorization of 7800 in exponential form is:

7800 = 23 × 31 × 52 × 131

Prime Factorization of 7808

Prime factors of 7808 are 2, 61. Prime factorization of 7808 in exponential form is:

7808 = 27 × 611

Now multiplying the highest exponent prime factors to calculate the LCM of 7800 and 7808.

LCM(7800,7808) = 27 × 31 × 52 × 131 × 611
LCM(7800,7808) = 7612800