What is the Least Common Multiple of 67781 and 67795?
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 67781 and 67795 is 656458985.
LCM(67781,67795) = 656458985
Least Common Multiple of 67781 and 67795 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67781 and 67795, than apply into the LCM equation.
GCF(67781,67795) = 7
LCM(67781,67795) = ( 67781 × 67795) / 7
LCM(67781,67795) = 4595212895 / 7
LCM(67781,67795) = 656458985
Least Common Multiple (LCM) of 67781 and 67795 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 67781 and 67795. First we will calculate the prime factors of 67781 and 67795.
Prime Factorization of 67781
Prime factors of 67781 are 7, 23, 421. Prime factorization of 67781 in exponential form is:
67781 = 71 × 231 × 4211
Prime Factorization of 67795
Prime factors of 67795 are 5, 7, 13, 149. Prime factorization of 67795 in exponential form is:
67795 = 51 × 71 × 131 × 1491
Now multiplying the highest exponent prime factors to calculate the LCM of 67781 and 67795.
LCM(67781,67795) = 71 × 231 × 4211 × 51 × 131 × 1491
LCM(67781,67795) = 656458985
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