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What is the Least Common Multiple of 455 and 462?

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 455 and 462 is 30030.

LCM(455,462) = 30030

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Least Common Multiple of 455 and 462 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 455 and 462, than apply into the LCM equation.

GCF(455,462) = 7
LCM(455,462) = ( 455 × 462) / 7
LCM(455,462) = 210210 / 7
LCM(455,462) = 30030

Least Common Multiple (LCM) of 455 and 462 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 455 and 462. First we will calculate the prime factors of 455 and 462.

Prime Factorization of 455

Prime factors of 455 are 5, 7, 13. Prime factorization of 455 in exponential form is:

455 = 51 × 71 × 131

Prime Factorization of 462

Prime factors of 462 are 2, 3, 7, 11. Prime factorization of 462 in exponential form is:

462 = 21 × 31 × 71 × 111

Now multiplying the highest exponent prime factors to calculate the LCM of 455 and 462.

LCM(455,462) = 51 × 71 × 131 × 21 × 31 × 111
LCM(455,462) = 30030