What is the Least Common Multiple of 687 and 701?
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 687 and 701 is 481587.
LCM(687,701) = 481587
Least Common Multiple of 687 and 701 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 687 and 701, than apply into the LCM equation.
GCF(687,701) = 1
LCM(687,701) = ( 687 × 701) / 1
LCM(687,701) = 481587 / 1
LCM(687,701) = 481587
Least Common Multiple (LCM) of 687 and 701 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 687 and 701. First we will calculate the prime factors of 687 and 701.
Prime Factorization of 687
Prime factors of 687 are 3, 229. Prime factorization of 687 in exponential form is:
687 = 31 × 2291
Prime Factorization of 701
Prime factors of 701 are 701. Prime factorization of 701 in exponential form is:
701 = 7011
Now multiplying the highest exponent prime factors to calculate the LCM of 687 and 701.
LCM(687,701) = 31 × 2291 × 7011
LCM(687,701) = 481587
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