2015年10月15日
摘要: Prime PalindromesThe number 151 is a prime palindrome because it is both a prime number and a palindrome (it is the same number when read forward as b... 阅读全文
posted @ 2015-10-15 22:48 ArcherCheng 阅读(148) 评论(0) 推荐(0) 编辑