ÃD¥Ø:¥Ñ200¨ì400ªº¾ã¼Æ¤¤, ³Ì¤pªº½è¦]¼Æ¬O13ªº¦³¦h¤ÖÓ?(¦³¨S¦³¸û¯S®íªº¤½¦¡¸Ñ,¦³ªº¸Ü,³Â·Ð¦C¤@¤U¤½¦¡)
13*17=22113*19=24713*23=29913*29=377À³¸Ó´N4Ó§a(¦p¦³¿òº|½Ð¦U¦ì«ü±Ð)
_________________KH~~ÆùÇUªÅÆòÇKÇQÆö¥@¬ÉÇN˦Çq•MÆõ³õ©ÒÇV¤@ºüÇGÇO«HÆþÇMÆêÇeÇ@
³Ì¤p½è¦]¼Æ¬O13¨º¥i°²³]¦¨n=(13^a0)*(p1^a1)*(p2^a2)*...(p1¨ìpn§¡¤j©ó13)¨º13^2=169,13^3´N©úÅã¶W¹L,©Ò¥Ha0=1§Î¦¡¥i¼g¦¨:n=13*p1¤]´N¬O§ä¤ñ13¤jªº½è¼Æ»P13¬Û¼,¦b½T©w½d³ò§Y¥i
¦h¤F¤@Ó169,¥u¦³¥|²Õ¸Ñ
¥´¤Ó§Ö¤F...¤w§ó¥¿¼Ó¤WªºÁÂÁÂ
Y13¡Ñ2(©Î2ªº¿¼Æ)«h³Ì¤pªº½è¦]¼Æ¬O2Y13¡Ñ3(©Î3ªº¿¼Æ)«h³Ì¤pªº½è¦]¼Æ¬O3¡K¥H¦¹Ãþ±À³Ì¤p¥²¶·¼¥H1313¡Ñ13=169=>¤p©ó20013¡Ñ17=221 ¢¡13¡Ñ19=247 ¢t13¡Ñ23=299 ¢q¡Ð4Ó13¡Ñ29=377 ¢£13¡Ñ31=403=>¤j©ó400Ans:4Ó