What is the Least Common Multiple of 691 and 697?
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 691 and 697 is 481627.
LCM(691,697) = 481627
Least Common Multiple of 691 and 697 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 691 and 697, than apply into the LCM equation.
GCF(691,697) = 1
LCM(691,697) = ( 691 × 697) / 1
LCM(691,697) = 481627 / 1
LCM(691,697) = 481627
Least Common Multiple (LCM) of 691 and 697 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 691 and 697. First we will calculate the prime factors of 691 and 697.
Prime Factorization of 691
Prime factors of 691 are 691. Prime factorization of 691 in exponential form is:
691 = 6911
Prime Factorization of 697
Prime factors of 697 are 17, 41. Prime factorization of 697 in exponential form is:
697 = 171 × 411
Now multiplying the highest exponent prime factors to calculate the LCM of 691 and 697.
LCM(691,697) = 6911 × 171 × 411
LCM(691,697) = 481627
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