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What is the Least Common Multiple of 91455 and 91465?

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 91455 and 91465 is 1672986315.

LCM(91455,91465) = 1672986315

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Least Common Multiple of 91455 and 91465 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91455 and 91465, than apply into the LCM equation.

GCF(91455,91465) = 5
LCM(91455,91465) = ( 91455 × 91465) / 5
LCM(91455,91465) = 8364931575 / 5
LCM(91455,91465) = 1672986315

Least Common Multiple (LCM) of 91455 and 91465 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91455 and 91465. First we will calculate the prime factors of 91455 and 91465.

Prime Factorization of 91455

Prime factors of 91455 are 3, 5, 7, 13, 67. Prime factorization of 91455 in exponential form is:

91455 = 31 × 51 × 71 × 131 × 671

Prime Factorization of 91465

Prime factors of 91465 are 5, 11, 1663. Prime factorization of 91465 in exponential form is:

91465 = 51 × 111 × 16631

Now multiplying the highest exponent prime factors to calculate the LCM of 91455 and 91465.

LCM(91455,91465) = 31 × 51 × 71 × 131 × 671 × 111 × 16631
LCM(91455,91465) = 1672986315