What is the Least Common Multiple of 842 and 854?
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 842 and 854 is 359534.
LCM(842,854) = 359534
Least Common Multiple of 842 and 854 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 842 and 854, than apply into the LCM equation.
GCF(842,854) = 2
LCM(842,854) = ( 842 × 854) / 2
LCM(842,854) = 719068 / 2
LCM(842,854) = 359534
Least Common Multiple (LCM) of 842 and 854 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 842 and 854. First we will calculate the prime factors of 842 and 854.
Prime Factorization of 842
Prime factors of 842 are 2, 421. Prime factorization of 842 in exponential form is:
842 = 21 × 4211
Prime Factorization of 854
Prime factors of 854 are 2, 7, 61. Prime factorization of 854 in exponential form is:
854 = 21 × 71 × 611
Now multiplying the highest exponent prime factors to calculate the LCM of 842 and 854.
LCM(842,854) = 21 × 4211 × 71 × 611
LCM(842,854) = 359534
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