111is an odd number,as it is not divisible by 2
The factors for 111 are all the numbers between -111 and 111 , which divide 111 without leaving any remainder. Since 111 divided by -111 is an integer, -111 is a factor of 111 .
Since 111 divided by -111 is a whole number, -111 is a factor of 111
Since 111 divided by -37 is a whole number, -37 is a factor of 111
Since 111 divided by -3 is a whole number, -3 is a factor of 111
Since 111 divided by -1 is a whole number, -1 is a factor of 111
Multiples of 111 are all integers divisible by 111 , i.e. the remainder of the full division by 111 is zero. There are infinite multiples of 111. The smallest multiples of 111 are:
It is possible to determine using mathematical techniques whether an integer is prime or not.
for 111, the answer is: No, 111 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 111). 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 10.536 ). 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: 109
Next prime number: 113