What is the Least Common Multiple of 416 and 422?
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 416 and 422 is 87776.
LCM(416,422) = 87776
Least Common Multiple of 416 and 422 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 416 and 422, than apply into the LCM equation.
GCF(416,422) = 2
LCM(416,422) = ( 416 × 422) / 2
LCM(416,422) = 175552 / 2
LCM(416,422) = 87776
Least Common Multiple (LCM) of 416 and 422 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 416 and 422. First we will calculate the prime factors of 416 and 422.
Prime Factorization of 416
Prime factors of 416 are 2, 13. Prime factorization of 416 in exponential form is:
416 = 25 × 131
Prime Factorization of 422
Prime factors of 422 are 2, 211. Prime factorization of 422 in exponential form is:
422 = 21 × 2111
Now multiplying the highest exponent prime factors to calculate the LCM of 416 and 422.
LCM(416,422) = 25 × 131 × 2111
LCM(416,422) = 87776
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