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What is the Least Common Multiple of 78858 and 78866?

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 78858 and 78866 is 3109607514.

LCM(78858,78866) = 3109607514

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Least Common Multiple of 78858 and 78866 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78858 and 78866, than apply into the LCM equation.

GCF(78858,78866) = 2
LCM(78858,78866) = ( 78858 × 78866) / 2
LCM(78858,78866) = 6219215028 / 2
LCM(78858,78866) = 3109607514

Least Common Multiple (LCM) of 78858 and 78866 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78858 and 78866. First we will calculate the prime factors of 78858 and 78866.

Prime Factorization of 78858

Prime factors of 78858 are 2, 3, 13, 337. Prime factorization of 78858 in exponential form is:

78858 = 21 × 32 × 131 × 3371

Prime Factorization of 78866

Prime factors of 78866 are 2, 47, 839. Prime factorization of 78866 in exponential form is:

78866 = 21 × 471 × 8391

Now multiplying the highest exponent prime factors to calculate the LCM of 78858 and 78866.

LCM(78858,78866) = 21 × 32 × 131 × 3371 × 471 × 8391
LCM(78858,78866) = 3109607514