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What is the Least Common Multiple of 74806 and 74820?

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 74806 and 74820 is 2798492460.

LCM(74806,74820) = 2798492460

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Least Common Multiple of 74806 and 74820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74806 and 74820, than apply into the LCM equation.

GCF(74806,74820) = 2
LCM(74806,74820) = ( 74806 × 74820) / 2
LCM(74806,74820) = 5596984920 / 2
LCM(74806,74820) = 2798492460

Least Common Multiple (LCM) of 74806 and 74820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 74806 and 74820. First we will calculate the prime factors of 74806 and 74820.

Prime Factorization of 74806

Prime factors of 74806 are 2, 113, 331. Prime factorization of 74806 in exponential form is:

74806 = 21 × 1131 × 3311

Prime Factorization of 74820

Prime factors of 74820 are 2, 3, 5, 29, 43. Prime factorization of 74820 in exponential form is:

74820 = 22 × 31 × 51 × 291 × 431

Now multiplying the highest exponent prime factors to calculate the LCM of 74806 and 74820.

LCM(74806,74820) = 22 × 1131 × 3311 × 31 × 51 × 291 × 431
LCM(74806,74820) = 2798492460