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**1443is an odd number**,as it is not divisible by 2

The factors for 1443 are all the numbers between -1443 and 1443 , which divide 1443 without leaving any remainder. Since 1443 divided by -1443 is an integer, -1443 is a factor of 1443 .

Since 1443 divided by -1443 is a whole number, -1443 is a factor of 1443

Since 1443 divided by -481 is a whole number, -481 is a factor of 1443

Since 1443 divided by -111 is a whole number, -111 is a factor of 1443

Since 1443 divided by -39 is a whole number, -39 is a factor of 1443

Since 1443 divided by -37 is a whole number, -37 is a factor of 1443

Since 1443 divided by -13 is a whole number, -13 is a factor of 1443

Since 1443 divided by -3 is a whole number, -3 is a factor of 1443

Since 1443 divided by -1 is a whole number, -1 is a factor of 1443

Since 1443 divided by 1 is a whole number, 1 is a factor of 1443

Since 1443 divided by 3 is a whole number, 3 is a factor of 1443

Since 1443 divided by 13 is a whole number, 13 is a factor of 1443

Since 1443 divided by 37 is a whole number, 37 is a factor of 1443

Since 1443 divided by 39 is a whole number, 39 is a factor of 1443

Since 1443 divided by 111 is a whole number, 111 is a factor of 1443

Since 1443 divided by 481 is a whole number, 481 is a factor of 1443

Multiples of 1443 are all integers divisible by 1443 , i.e. the remainder of the full division by 1443 is zero. There are infinite multiples of 1443. The smallest multiples of 1443 are:

0 : in fact, 0 is divisible by any integer, so it is also a multiple of 1443 since 0 × 1443 = 0

1443 : in fact, 1443 is a multiple of itself, since 1443 is divisible by 1443 (it was 1443 / 1443 = 1, so the rest of this division is zero)

2886: in fact, 2886 = 1443 × 2

4329: in fact, 4329 = 1443 × 3

5772: in fact, 5772 = 1443 × 4

7215: in fact, 7215 = 1443 × 5

etc.

It is possible to determine using mathematical techniques whether an integer is prime or not.

for 1443, the answer is:
**No, 1443 is not a prime number**.

To know the primality of an integer, we can use several algorithms. The most naive is to try all divisors below the number you want to know if it is prime (in our case 1443). We can already eliminate even numbers bigger than 2 (then 4 , 6 , 8 ...). Besides, we can stop at the square root of the number in question (here 37.987 ). Historically, the Eratosthenes screen (which dates back to Antiquity) uses this technique relatively effectively.

More modern techniques include the Atkin screen, probabilistic tests, or the cyclotomic test.

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