What is the Least Common Multiple of 1790 and 1802?
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 1790 and 1802 is 1612790.
LCM(1790,1802) = 1612790
Least Common Multiple of 1790 and 1802 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1790 and 1802, than apply into the LCM equation.
GCF(1790,1802) = 2
LCM(1790,1802) = ( 1790 × 1802) / 2
LCM(1790,1802) = 3225580 / 2
LCM(1790,1802) = 1612790
Least Common Multiple (LCM) of 1790 and 1802 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 1790 and 1802. First we will calculate the prime factors of 1790 and 1802.
Prime Factorization of 1790
Prime factors of 1790 are 2, 5, 179. Prime factorization of 1790 in exponential form is:
1790 = 21 × 51 × 1791
Prime Factorization of 1802
Prime factors of 1802 are 2, 17, 53. Prime factorization of 1802 in exponential form is:
1802 = 21 × 171 × 531
Now multiplying the highest exponent prime factors to calculate the LCM of 1790 and 1802.
LCM(1790,1802) = 21 × 51 × 1791 × 171 × 531
LCM(1790,1802) = 1612790
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