What is the Least Common Multiple of 249 and 258?
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 249 and 258 is 21414.
LCM(249,258) = 21414
Least Common Multiple of 249 and 258 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 249 and 258, than apply into the LCM equation.
GCF(249,258) = 3
LCM(249,258) = ( 249 × 258) / 3
LCM(249,258) = 64242 / 3
LCM(249,258) = 21414
Least Common Multiple (LCM) of 249 and 258 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 249 and 258. First we will calculate the prime factors of 249 and 258.
Prime Factorization of 249
Prime factors of 249 are 3, 83. Prime factorization of 249 in exponential form is:
249 = 31 × 831
Prime Factorization of 258
Prime factors of 258 are 2, 3, 43. Prime factorization of 258 in exponential form is:
258 = 21 × 31 × 431
Now multiplying the highest exponent prime factors to calculate the LCM of 249 and 258.
LCM(249,258) = 31 × 831 × 21 × 431
LCM(249,258) = 21414
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