What is the greatest prime factor of (15!14!) + (15!16!)?  Choose the correct choice: A) 31 B) 71 C) 181 D) 211 E) 241
15!14! + 15!16!   = 15!14! (1+15*16)   = 15!14!(241)   The answer is 241.
<result>E</result>
What is the greatest prime factor of (15!14!) + (15!16!)?