In addition we can say of the number 3994 that it is even
3994 is an even number, as it is divisible by 2 : 3994/2 = 1997
The factors for 3994 are all the numbers between -3994 and 3994 , which divide 3994 without leaving any remainder. Since 3994 divided by -3994 is an integer, -3994 is a factor of 3994 .
Since 3994 divided by -3994 is a whole number, -3994 is a factor of 3994
Since 3994 divided by -1997 is a whole number, -1997 is a factor of 3994
Since 3994 divided by -2 is a whole number, -2 is a factor of 3994
Since 3994 divided by -1 is a whole number, -1 is a factor of 3994
Multiples of 3994 are all integers divisible by 3994 , i.e. the remainder of the full division by 3994 is zero. There are infinite multiples of 3994. The smallest multiples of 3994 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 3994, the answer is: No, 3994 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 3994). 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 63.198 ). 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.
Previous prime number: 3989
Next prime number: 4001