求助一道PREP

sdcar2010

2) k = 13! + m, whereas m = 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.  Then m must be a factor of 13! Then k = m*(13!/m + 1).  So m is a factor of k, 2<m<13<13!<k

m is the p you want.