The #1 on Inkigayo on 2013-10-13 was “Very Good” by Block B — win No. 1 for the song and career win No. 1 for Block B (No. 1 on this show).
“Very Good” has 1 music show wins in total: 2013-10-13 Inkigayo. Block B had 1 wins in 2013 up to this date, and this was the artist's first win on Inkigayo. The previous week's Inkigayo #1 was “Love, At First” by Busker Busker. Episode data comes from broadcasters' published results (Wikipedia lists, CC BY-SA) and is recounted daily.