What is the Least Common Multiple of 779 and 790?
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 779 and 790 is 615410.
LCM(779,790) = 615410
Least Common Multiple of 779 and 790 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 779 and 790, than apply into the LCM equation.
GCF(779,790) = 1
LCM(779,790) = ( 779 × 790) / 1
LCM(779,790) = 615410 / 1
LCM(779,790) = 615410
Least Common Multiple (LCM) of 779 and 790 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 779 and 790. First we will calculate the prime factors of 779 and 790.
Prime Factorization of 779
Prime factors of 779 are 19, 41. Prime factorization of 779 in exponential form is:
779 = 191 × 411
Prime Factorization of 790
Prime factors of 790 are 2, 5, 79. Prime factorization of 790 in exponential form is:
790 = 21 × 51 × 791
Now multiplying the highest exponent prime factors to calculate the LCM of 779 and 790.
LCM(779,790) = 191 × 411 × 21 × 51 × 791
LCM(779,790) = 615410
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