Is 28851 a prime number?
It is divisible by 3:
10 Mod 3 = 1 ------>
10^n Mod 3 = 1^n = 1 ------>
Sum over cn 10^n Mod 3 =
Sum over cn Mod 3
28851 Mod 3 = (2 + 8 + 8 + 5 + 1) Mod 3
= 0
http://primes.utm.edu/lists/small/1000.txt
nope, it is divisible by 3
To determine whether 28851 is a prime number, we can use the following steps:
1. Start by checking if 28851 is divisible by 2. If it is, then it is not a prime number since prime numbers are only divisible by 1 and themselves. If it is not divisible by 2, proceed to the next step.
2. Next, check if 28851 is divisible by any odd numbers up to the square root of 28851. This is because if a number is not divisible by any numbers up to its square root, it will not be divisible by larger numbers.
3. To check for divisibility, divide 28851 by each odd number, starting from 3 and going up to the square root of 28851 (which is approximately 169). If at any point the result of the division is an integer, then 28851 is not a prime number. However, if none of the divisions yield an integer result, then 28851 is a prime number.
Following these steps, we find that 28851 is not divisible by any odd numbers up to its square root. Therefore, it is likely that 28851 is a prime number. However, it's always a good idea to double-check the calculations to confirm.