What is the Least Common Multiple of 683 and 690?
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 690 is 471270.
LCM(683,690) = 471270
Least Common Multiple of 683 and 690 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 690, than apply into the LCM equation.
GCF(683,690) = 1
LCM(683,690) = ( 683 × 690) / 1
LCM(683,690) = 471270 / 1
LCM(683,690) = 471270
Least Common Multiple (LCM) of 683 and 690 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 683 and 690. First we will calculate the prime factors of 683 and 690.
Prime Factorization of 683
Prime factors of 683 are 683. Prime factorization of 683 in exponential form is:
683 = 6831
Prime Factorization of 690
Prime factors of 690 are 2, 3, 5, 23. Prime factorization of 690 in exponential form is:
690 = 21 × 31 × 51 × 231
Now multiplying the highest exponent prime factors to calculate the LCM of 683 and 690.
LCM(683,690) = 6831 × 21 × 31 × 51 × 231
LCM(683,690) = 471270
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