What is the Least Common Multiple of 828 and 842?
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 828 and 842 is 348588.
LCM(828,842) = 348588
Least Common Multiple of 828 and 842 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 828 and 842, than apply into the LCM equation.
GCF(828,842) = 2
LCM(828,842) = ( 828 × 842) / 2
LCM(828,842) = 697176 / 2
LCM(828,842) = 348588
Least Common Multiple (LCM) of 828 and 842 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 828 and 842. First we will calculate the prime factors of 828 and 842.
Prime Factorization of 828
Prime factors of 828 are 2, 3, 23. Prime factorization of 828 in exponential form is:
828 = 22 × 32 × 231
Prime Factorization of 842
Prime factors of 842 are 2, 421. Prime factorization of 842 in exponential form is:
842 = 21 × 4211
Now multiplying the highest exponent prime factors to calculate the LCM of 828 and 842.
LCM(828,842) = 22 × 32 × 231 × 4211
LCM(828,842) = 348588
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