What is the Least Common Multiple of 787 and 798?
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 787 and 798 is 628026.
LCM(787,798) = 628026
Least Common Multiple of 787 and 798 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 787 and 798, than apply into the LCM equation.
GCF(787,798) = 1
LCM(787,798) = ( 787 × 798) / 1
LCM(787,798) = 628026 / 1
LCM(787,798) = 628026
Least Common Multiple (LCM) of 787 and 798 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 787 and 798. First we will calculate the prime factors of 787 and 798.
Prime Factorization of 787
Prime factors of 787 are 787. Prime factorization of 787 in exponential form is:
787 = 7871
Prime Factorization of 798
Prime factors of 798 are 2, 3, 7, 19. Prime factorization of 798 in exponential form is:
798 = 21 × 31 × 71 × 191
Now multiplying the highest exponent prime factors to calculate the LCM of 787 and 798.
LCM(787,798) = 7871 × 21 × 31 × 71 × 191
LCM(787,798) = 628026
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