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What is the Least Common Multiple of 1288 and 1306?

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 1288 and 1306 is 841064.

LCM(1288,1306) = 841064

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Least Common Multiple of 1288 and 1306 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1288 and 1306, than apply into the LCM equation.

GCF(1288,1306) = 2
LCM(1288,1306) = ( 1288 × 1306) / 2
LCM(1288,1306) = 1682128 / 2
LCM(1288,1306) = 841064

Least Common Multiple (LCM) of 1288 and 1306 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1288 and 1306. First we will calculate the prime factors of 1288 and 1306.

Prime Factorization of 1288

Prime factors of 1288 are 2, 7, 23. Prime factorization of 1288 in exponential form is:

1288 = 23 × 71 × 231

Prime Factorization of 1306

Prime factors of 1306 are 2, 653. Prime factorization of 1306 in exponential form is:

1306 = 21 × 6531

Now multiplying the highest exponent prime factors to calculate the LCM of 1288 and 1306.

LCM(1288,1306) = 23 × 71 × 231 × 6531
LCM(1288,1306) = 841064