What is the Least Common Multiple of 806 and 821?
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 806 and 821 is 661726.
LCM(806,821) = 661726
Least Common Multiple of 806 and 821 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 806 and 821, than apply into the LCM equation.
GCF(806,821) = 1
LCM(806,821) = ( 806 × 821) / 1
LCM(806,821) = 661726 / 1
LCM(806,821) = 661726
Least Common Multiple (LCM) of 806 and 821 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 806 and 821. First we will calculate the prime factors of 806 and 821.
Prime Factorization of 806
Prime factors of 806 are 2, 13, 31. Prime factorization of 806 in exponential form is:
806 = 21 × 131 × 311
Prime Factorization of 821
Prime factors of 821 are 821. Prime factorization of 821 in exponential form is:
821 = 8211
Now multiplying the highest exponent prime factors to calculate the LCM of 806 and 821.
LCM(806,821) = 21 × 131 × 311 × 8211
LCM(806,821) = 661726
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