Read the text and answer the questions.

500 (five hundred) is the natural number following 499 and preceding 501. 

500 is a Harshad number in bases 5, 6, 10, 11, 13, 15 and 16. 

Five hundred is also 



501 = 3 × 167. It is: 502 = 2 × 251, also a proposed HTTP status code for indicating server is temporarily overloaded, SMTP status code meaning command not implemented 503 is: 504 = 2 × 3 × 7. It is: 505 = 5 × 101, Harshad number in bases 3, 5 and 6 

This number is the magic constant of "n"×"n" normal magic square and "n"-queens problem for "n" = 10. 

New Mexico – Before October 7, 2007, The United States state of New Mexico had a single area code of 505. The state was, and still is, referred to as 'the 505' in slang. 506 = 2 × 11 × 23. It is: 507 = 3 × 13, Harshad number in bases 13 and 14. 508 = 2 × 127, sum of four consecutive primes (113 + 127 + 131 + 137), Harshad number in base 13. 509 is: 

510 = 2 × 3 × 5 × 17. It is: 511 = 7 × 73. It is: 512 = 2. It is: 513 = 3 × 19. It is: 514 = 2 × 257, it is: 515 = 5 × 103, it is: 516 = 2 × 3 × 43, it is: 517 = 11 × 47, it is: 518 = 2 × 7 × 37, it is: 519 = 3 × 173, it is:

1. what date did the area code change in NM
2. what was the code
3. what type of number is 500
4. what comes before 500
5. and after?
6. what are a few bases
7. what number equals "n" in the article
8. are there more odd or even bases of 500
9. what are the four consecutive primes? (they are in parenthesis)
10. what is the HTTP status code for
11. In last paragraph, what does 7 x 73 equal
12. what does 3 x 19 equal

Numbered answers:
1. October 7, 2007,
2. 505
3. a natural one
4. 499
5. 501.
6. bases 5,&  6,
7. 505
8. odd
9. 113, 127, 131,137
10. indicating server is temporarily overloaded,
11. 511
12. 513