I am using the values as follows:
$(p, q, n, \phi(n), e, d) = (1033, 5039, 5205287, 5199216, 65537, 3784241)$
Yes, I have made sure $e$ and $\phi(n)$ are coprime.
For example, if I were to encrypt the value $13130$, I would get $4664915$ and then I decrypted $4664915$ and got $13130$.
The problem is when then I encrypted the number $1310731326$ and got $3386045$, when I went to decrypt $3386045$, I got $18660$ which is nowhere near $1310731326$.
I've been trying all day and still can't find the solution. Can someone help me please!?!?!