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What is the Least Common Multiple of 97785 and 97800?

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 97785 and 97800 is 637558200.

LCM(97785,97800) = 637558200

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Least Common Multiple of 97785 and 97800 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 97785 and 97800, than apply into the LCM equation.

GCF(97785,97800) = 15
LCM(97785,97800) = ( 97785 × 97800) / 15
LCM(97785,97800) = 9563373000 / 15
LCM(97785,97800) = 637558200

Least Common Multiple (LCM) of 97785 and 97800 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 97785 and 97800. First we will calculate the prime factors of 97785 and 97800.

Prime Factorization of 97785

Prime factors of 97785 are 3, 5, 41, 53. Prime factorization of 97785 in exponential form is:

97785 = 32 × 51 × 411 × 531

Prime Factorization of 97800

Prime factors of 97800 are 2, 3, 5, 163. Prime factorization of 97800 in exponential form is:

97800 = 23 × 31 × 52 × 1631

Now multiplying the highest exponent prime factors to calculate the LCM of 97785 and 97800.

LCM(97785,97800) = 32 × 52 × 411 × 531 × 23 × 1631
LCM(97785,97800) = 637558200