What is the Least Common Multiple of 782 and 791?
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 782 and 791 is 618562.
LCM(782,791) = 618562
Least Common Multiple of 782 and 791 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 782 and 791, than apply into the LCM equation.
GCF(782,791) = 1
LCM(782,791) = ( 782 × 791) / 1
LCM(782,791) = 618562 / 1
LCM(782,791) = 618562
Least Common Multiple (LCM) of 782 and 791 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 782 and 791. First we will calculate the prime factors of 782 and 791.
Prime Factorization of 782
Prime factors of 782 are 2, 17, 23. Prime factorization of 782 in exponential form is:
782 = 21 × 171 × 231
Prime Factorization of 791
Prime factors of 791 are 7, 113. Prime factorization of 791 in exponential form is:
791 = 71 × 1131
Now multiplying the highest exponent prime factors to calculate the LCM of 782 and 791.
LCM(782,791) = 21 × 171 × 231 × 71 × 1131
LCM(782,791) = 618562
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