What is the Least Common Multiple of 858 and 869?
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 858 and 869 is 67782.
LCM(858,869) = 67782
Least Common Multiple of 858 and 869 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 858 and 869, than apply into the LCM equation.
GCF(858,869) = 11
LCM(858,869) = ( 858 × 869) / 11
LCM(858,869) = 745602 / 11
LCM(858,869) = 67782
Least Common Multiple (LCM) of 858 and 869 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 858 and 869. First we will calculate the prime factors of 858 and 869.
Prime Factorization of 858
Prime factors of 858 are 2, 3, 11, 13. Prime factorization of 858 in exponential form is:
858 = 21 × 31 × 111 × 131
Prime Factorization of 869
Prime factors of 869 are 11, 79. Prime factorization of 869 in exponential form is:
869 = 111 × 791
Now multiplying the highest exponent prime factors to calculate the LCM of 858 and 869.
LCM(858,869) = 21 × 31 × 111 × 131 × 791
LCM(858,869) = 67782
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Related Least Common Multiples of 869
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