Calculate the number of students

Question

The exam employee tries to distribute students evenly in the examination halls, if she knows that the number of students varies

Between 500 and 1000 and that:

1- If students are divided into two halls, one student remains without the hall

2- If students are distributed into three halls, one student remains without the hall

3- If students are distributed into four halls, one student will remain without the hall

4- If students are distributed into five halls, one student remains without the hall

5- If students are distributed into six halls, one student will be left without the hall

6- If students are divided into seven halls, no student will remain without the hall

Write a program that allows you to see the actual number of students.