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What is the Least Common Multiple of 689 and 700?

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 689 and 700 is 482300.

LCM(689,700) = 482300

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Least Common Multiple of 689 and 700 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 689 and 700, than apply into the LCM equation.

GCF(689,700) = 1
LCM(689,700) = ( 689 × 700) / 1
LCM(689,700) = 482300 / 1
LCM(689,700) = 482300

Least Common Multiple (LCM) of 689 and 700 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 689 and 700. First we will calculate the prime factors of 689 and 700.

Prime Factorization of 689

Prime factors of 689 are 13, 53. Prime factorization of 689 in exponential form is:

689 = 131 × 531

Prime Factorization of 700

Prime factors of 700 are 2, 5, 7. Prime factorization of 700 in exponential form is:

700 = 22 × 52 × 71

Now multiplying the highest exponent prime factors to calculate the LCM of 689 and 700.

LCM(689,700) = 131 × 531 × 22 × 52 × 71
LCM(689,700) = 482300