What is the Least Common Multiple of 286 and 290?
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 286 and 290 is 41470.
LCM(286,290) = 41470
Least Common Multiple of 286 and 290 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 286 and 290, than apply into the LCM equation.
GCF(286,290) = 2
LCM(286,290) = ( 286 × 290) / 2
LCM(286,290) = 82940 / 2
LCM(286,290) = 41470
Least Common Multiple (LCM) of 286 and 290 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 286 and 290. First we will calculate the prime factors of 286 and 290.
Prime Factorization of 286
Prime factors of 286 are 2, 11, 13. Prime factorization of 286 in exponential form is:
286 = 21 × 111 × 131
Prime Factorization of 290
Prime factors of 290 are 2, 5, 29. Prime factorization of 290 in exponential form is:
290 = 21 × 51 × 291
Now multiplying the highest exponent prime factors to calculate the LCM of 286 and 290.
LCM(286,290) = 21 × 111 × 131 × 51 × 291
LCM(286,290) = 41470
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