What is the Least Common Multiple of 683 and 687?
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 683 and 687 is 469221.
LCM(683,687) = 469221
Least Common Multiple of 683 and 687 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 683 and 687, than apply into the LCM equation.
GCF(683,687) = 1
LCM(683,687) = ( 683 × 687) / 1
LCM(683,687) = 469221 / 1
LCM(683,687) = 469221
Least Common Multiple (LCM) of 683 and 687 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 683 and 687. First we will calculate the prime factors of 683 and 687.
Prime Factorization of 683
Prime factors of 683 are 683. Prime factorization of 683 in exponential form is:
683 = 6831
Prime Factorization of 687
Prime factors of 687 are 3, 229. Prime factorization of 687 in exponential form is:
687 = 31 × 2291
Now multiplying the highest exponent prime factors to calculate the LCM of 683 and 687.
LCM(683,687) = 6831 × 31 × 2291
LCM(683,687) = 469221
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