The number 15 factorial ends in p zeros when converted to base 12. Find p

15 factorial is 1307674368000 under base 10. When converted to base 12, it turns into 191529600000.

There are 5 zeroes.

15! = 1,307,674,368,000 - This is in decimal form. This, then, is converted to base 12, which gives the above answer of: 191,529,600,000₁₂ .