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What is the Least Common Multiple of 78705 and 78722?

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 78705 and 78722 is 6195815010.

LCM(78705,78722) = 6195815010

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Least Common Multiple of 78705 and 78722 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78705 and 78722, than apply into the LCM equation.

GCF(78705,78722) = 1
LCM(78705,78722) = ( 78705 × 78722) / 1
LCM(78705,78722) = 6195815010 / 1
LCM(78705,78722) = 6195815010

Least Common Multiple (LCM) of 78705 and 78722 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78705 and 78722. First we will calculate the prime factors of 78705 and 78722.

Prime Factorization of 78705

Prime factors of 78705 are 3, 5, 11, 53. Prime factorization of 78705 in exponential form is:

78705 = 33 × 51 × 111 × 531

Prime Factorization of 78722

Prime factors of 78722 are 2, 7, 5623. Prime factorization of 78722 in exponential form is:

78722 = 21 × 71 × 56231

Now multiplying the highest exponent prime factors to calculate the LCM of 78705 and 78722.

LCM(78705,78722) = 33 × 51 × 111 × 531 × 21 × 71 × 56231
LCM(78705,78722) = 6195815010