In addition we can say of the number 7988 that it is even
7988 is an even number, as it is divisible by 2 : 7988/2 = 3994
The factors for 7988 are all the numbers between -7988 and 7988 , which divide 7988 without leaving any remainder. Since 7988 divided by -7988 is an integer, -7988 is a factor of 7988 .
Since 7988 divided by -7988 is a whole number, -7988 is a factor of 7988
Since 7988 divided by -3994 is a whole number, -3994 is a factor of 7988
Since 7988 divided by -1997 is a whole number, -1997 is a factor of 7988
Since 7988 divided by -4 is a whole number, -4 is a factor of 7988
Since 7988 divided by -2 is a whole number, -2 is a factor of 7988
Since 7988 divided by -1 is a whole number, -1 is a factor of 7988
Multiples of 7988 are all integers divisible by 7988 , i.e. the remainder of the full division by 7988 is zero. There are infinite multiples of 7988. The smallest multiples of 7988 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 7988, the answer is: No, 7988 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 7988). 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 89.376 ). 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: 7963
Next prime number: 7993