What is the Least Common Multiple of 668 and 682?
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 668 and 682 is 227788.
LCM(668,682) = 227788
Least Common Multiple of 668 and 682 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 668 and 682, than apply into the LCM equation.
GCF(668,682) = 2
LCM(668,682) = ( 668 × 682) / 2
LCM(668,682) = 455576 / 2
LCM(668,682) = 227788
Least Common Multiple (LCM) of 668 and 682 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 668 and 682. First we will calculate the prime factors of 668 and 682.
Prime Factorization of 668
Prime factors of 668 are 2, 167. Prime factorization of 668 in exponential form is:
668 = 22 × 1671
Prime Factorization of 682
Prime factors of 682 are 2, 11, 31. Prime factorization of 682 in exponential form is:
682 = 21 × 111 × 311
Now multiplying the highest exponent prime factors to calculate the LCM of 668 and 682.
LCM(668,682) = 22 × 1671 × 111 × 311
LCM(668,682) = 227788
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