What is the Least Common Multiple of 674 and 686?
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 674 and 686 is 231182.
LCM(674,686) = 231182
Least Common Multiple of 674 and 686 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 674 and 686, than apply into the LCM equation.
GCF(674,686) = 2
LCM(674,686) = ( 674 × 686) / 2
LCM(674,686) = 462364 / 2
LCM(674,686) = 231182
Least Common Multiple (LCM) of 674 and 686 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 674 and 686. First we will calculate the prime factors of 674 and 686.
Prime Factorization of 674
Prime factors of 674 are 2, 337. Prime factorization of 674 in exponential form is:
674 = 21 × 3371
Prime Factorization of 686
Prime factors of 686 are 2, 7. Prime factorization of 686 in exponential form is:
686 = 21 × 73
Now multiplying the highest exponent prime factors to calculate the LCM of 674 and 686.
LCM(674,686) = 21 × 3371 × 73
LCM(674,686) = 231182
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