What is the Least Common Multiple of 681 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 681 and 700 is 476700.
LCM(681,700) = 476700
Least Common Multiple of 681 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 681 and 700, than apply into the LCM equation.
GCF(681,700) = 1
LCM(681,700) = ( 681 × 700) / 1
LCM(681,700) = 476700 / 1
LCM(681,700) = 476700
Least Common Multiple (LCM) of 681 and 700 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 681 and 700. First we will calculate the prime factors of 681 and 700.
Prime Factorization of 681
Prime factors of 681 are 3, 227. Prime factorization of 681 in exponential form is:
681 = 31 × 2271
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 681 and 700.
LCM(681,700) = 31 × 2271 × 22 × 52 × 71
LCM(681,700) = 476700
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