13

http://www.entrancestohell.com/
http://www.entrances2hell.co.uk/
http://vaniquotes.org/wiki/Category:Thirteen

https://www.google.com/search?q=13th+days+death
http://io9.com/13-places-on-earth-thought-to-be-entrances-to-hell-1441628317

From his thirteen wives, Dharma produced

1. Kama, 
2. Darpa, 
3. Niyam, 
4. Santosh, 
5. Lobha, 
6. Shrut, 
7. Dand, 
8. Naya, 
9. Vinay, 
10. Bodh, 
11. Vyavasay, 
12. Kshema, 
13. Sukh and Yash.(Nara and Narayana)

http://www.gloriousindia.com/scriptures/puranas/vishnu_purana/birth_of_prajapatis_and_their_progeny.html