What is the Least Common Multiple of 417 and 434?
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 417 and 434 is 180978.
LCM(417,434) = 180978
Least Common Multiple of 417 and 434 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 417 and 434, than apply into the LCM equation.
GCF(417,434) = 1
LCM(417,434) = ( 417 × 434) / 1
LCM(417,434) = 180978 / 1
LCM(417,434) = 180978
Least Common Multiple (LCM) of 417 and 434 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 417 and 434. First we will calculate the prime factors of 417 and 434.
Prime Factorization of 417
Prime factors of 417 are 3, 139. Prime factorization of 417 in exponential form is:
417 = 31 × 1391
Prime Factorization of 434
Prime factors of 434 are 2, 7, 31. Prime factorization of 434 in exponential form is:
434 = 21 × 71 × 311
Now multiplying the highest exponent prime factors to calculate the LCM of 417 and 434.
LCM(417,434) = 31 × 1391 × 21 × 71 × 311
LCM(417,434) = 180978
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