What is the Least Common Multiple of 421 and 426?
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 421 and 426 is 179346.
LCM(421,426) = 179346
Least Common Multiple of 421 and 426 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 421 and 426, than apply into the LCM equation.
GCF(421,426) = 1
LCM(421,426) = ( 421 × 426) / 1
LCM(421,426) = 179346 / 1
LCM(421,426) = 179346
Least Common Multiple (LCM) of 421 and 426 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 421 and 426. First we will calculate the prime factors of 421 and 426.
Prime Factorization of 421
Prime factors of 421 are 421. Prime factorization of 421 in exponential form is:
421 = 4211
Prime Factorization of 426
Prime factors of 426 are 2, 3, 71. Prime factorization of 426 in exponential form is:
426 = 21 × 31 × 711
Now multiplying the highest exponent prime factors to calculate the LCM of 421 and 426.
LCM(421,426) = 4211 × 21 × 31 × 711
LCM(421,426) = 179346
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