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What is the Least Common Multiple of 74290 and 74307?

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 74290 and 74307 is 324721590.

LCM(74290,74307) = 324721590

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Least Common Multiple of 74290 and 74307 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74290 and 74307, than apply into the LCM equation.

GCF(74290,74307) = 17
LCM(74290,74307) = ( 74290 × 74307) / 17
LCM(74290,74307) = 5520267030 / 17
LCM(74290,74307) = 324721590

Least Common Multiple (LCM) of 74290 and 74307 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 74290 and 74307. First we will calculate the prime factors of 74290 and 74307.

Prime Factorization of 74290

Prime factors of 74290 are 2, 5, 17, 19, 23. Prime factorization of 74290 in exponential form is:

74290 = 21 × 51 × 171 × 191 × 231

Prime Factorization of 74307

Prime factors of 74307 are 3, 17, 31, 47. Prime factorization of 74307 in exponential form is:

74307 = 31 × 171 × 311 × 471

Now multiplying the highest exponent prime factors to calculate the LCM of 74290 and 74307.

LCM(74290,74307) = 21 × 51 × 171 × 191 × 231 × 31 × 311 × 471
LCM(74290,74307) = 324721590