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Perfect Number

Original title: Yong-eui-ja X
  • 2012
  • Not Rated
  • 1h 59m
IMDb RATING
6.9/10
2.6K
YOUR RATING
Ryu Seung-beom, Lee Yo-won, and Cho Jin-woong in Perfect Number (2012)
Suk-go showed a lot of promise as a brilliant mathematician when he was in school, resolutely focused on his studies rather than on friends throughout his childhood. Now in his 30s heÂ’s an ordinary high school math teacher, a far cry from the promising future of his youth. His morning exchanges with Hwa-sun, the shopkeeper he buys lunch from, is the brightest part of his day. During a violent altercation with her ex-husband where he mercilessly beats both her and her niece, Hwa-sun kills him. Suk-go overhears the fight from his house next door and decides to cover up the killing and protect her from the police. He plans the perfect alibi for her and thanks to his efforts Hwa-sun is never much of a suspect in the case. However, the detective in charge, Min-bum, believes that Hwa-sun is indeed the killer and follows his instincts.
Play trailer1:40
1 Video
6 Photos
CrimeDramaMysteryThriller

Brilliant math teacher formulates the perfect cover-up, after his neighbor murders her abusive ex-husband.Brilliant math teacher formulates the perfect cover-up, after his neighbor murders her abusive ex-husband.Brilliant math teacher formulates the perfect cover-up, after his neighbor murders her abusive ex-husband.

  • Director
    • Pang Eun-jin
  • Writers
    • Gong-ju Lee
    • Lee Jung-hwa
    • Kim Tae-yoon
  • Stars
    • Ryu Seung-beom
    • Lee Yo-won
    • Cho Jin-woong
  • See production info at IMDbPro
  • IMDb RATING
    6.9/10
    2.6K
    YOUR RATING
    • Director
      • Pang Eun-jin
    • Writers
      • Gong-ju Lee
      • Lee Jung-hwa
      • Kim Tae-yoon
    • Stars
      • Ryu Seung-beom
      • Lee Yo-won
      • Cho Jin-woong
    • 15User reviews
    • 8Critic reviews
  • See production info at IMDbPro
    • Awards
      • 1 nomination total

    Videos1

    Main
    Trailer 1:40
    Main

    Photos5

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    Top cast13

    Edit
    Ryu Seung-beom
    Ryu Seung-beom
    • Seok-go
    Lee Yo-won
    Lee Yo-won
    • Hwa-Sun
    Cho Jin-woong
    Cho Jin-woong
    • Detective Min-beom
    Kim Yoon-seong
    Kim Yoon-seong
    • Sang-joon
    Kwak Min-ho
    Kwak Min-ho
    • Cheol-min
    Kim Bo-ra
    Kim Bo-ra
    • Yoon-ah
    Kwon Hae-hyo
    Kwon Hae-hyo
    • Team Leader
    Park Jung-pyo
    Park Jung-pyo
    • Doctor
    Seok-jun Lee
    • Nam Tae-woo
    Julia Lim
    Julia Lim
    • Jung-sook
    Nam Moon-cheol
    • Section Chief
    Nam Yeon-woo
    • Investigation team #2
    Choi Young-woo
    Choi Young-woo
    • Forensic team member #1
    • Director
      • Pang Eun-jin
    • Writers
      • Gong-ju Lee
      • Lee Jung-hwa
      • Kim Tae-yoon
    • All cast & crew
    • Production, box office & more at IMDbPro

    User reviews15

    6.92.5K
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    10

    Featured reviews

    9zboston3

    Love & Math

    I've yet to see the original Japanese version of this story, but the Korean version is one more reason why I feel Korea makes some of the best movies around.

    A story of logic and math, this story emphasizes the relationships over the usual mystery. It's about why did it more than how did it, and the ending like a character says is happy and bitter.

    The acting in excellent and the music is also a great part in why it's so effective.

    I'm not going to give a lot of detail about the plot or the characters. See the move on Youtube with English subtitles and enjoy.
    7AJ1983

    7/10 ... for the ending.

    I won't spoil it for you, but its not the ending you would want from a movie like this. A powerful love story hidden behind a smart crime/mystery chain of events .. well crafted . Enjoyable movie until the very last part.. left me in tears. Watch at your own risk.
    rightwingisevil

    Okay but not that great

    This paces of this movie is way too slow. The lighting is too dim all the time; too many night scenes and rainy night scenes. The leading male actor is so overacting to pretend that he is a geek and a loner. When her ex beat her so viciously, keeps hitting and slapping her non-stop, yet her face still looks perfect without any bruise, no swollen or puffy bluish purple wounds, her lips still looks perfect, no blood at all. The elevator scene of the movie theater is outrageous impossible without any logic. The screenplay is full of loopholes. This is a very slow, without energy thriller.
    9Fella_shibby

    I liked the ending of this version better than the Japanese version.

    I first saw this in 2012. Revisited it recently.

    This is the second adaptation of the novel The Devotion of Suspect X.

    This is the Korean version with amazing performances. Sorry, i ain't aware of the names.

    Being a Korean movie, it has some melodrama but I liked the ending of this version much better than the Japanese version.

    The hardwork of the math teacher goes futile in Jap version but here in this version it doesn't.

    While the Jap version has the mother n daughter, this one changed it to aunt n niece.

    While in the Jap version they showed the physicist's amazing problem solving skills where he solves a crime via the explanation of physics.

    This version doesn't showcases his skills.
    8Foutainoflife

    Love Is Bitter

    I liked this a lot. I've seen where this was a remake of an earlier film but this is my first time watching either. There were times when it seemed to be a bit slow, in my opinion, but over all there was a level of subtle suspense that held out through the whole film. It was sorta sad and I didn't really liked the way it ended even if it was the way it was "supposed" to end. It was worth a watch. Clever.

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    Related interests

    James Gandolfini, Edie Falco, Sharon Angela, Max Casella, Dan Grimaldi, Joe Perrino, Donna Pescow, Jamie-Lynn Sigler, Tony Sirico, and Michael Drayer in The Sopranos (1999)
    Crime
    Mahershala Ali and Alex R. Hibbert in Moonlight (2016)
    Drama
    Jack Nicholson and Faye Dunaway in Chinatown (1974)
    Mystery
    Cho Yeo-jeong in Parasite (2019)
    Thriller

    Storyline

    Edit

    Did you know

    Edit
    • Trivia
      Based on Japanese mystery writer Keigo Higashino's 2005 novel "Yogisha X no Kenshin" ("The Devotion of Suspect X").
    • Connections
      Version of Suspect X (2008)

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    FAQ17

    • How long is Perfect Number?Powered by Alexa

    Details

    Edit
    • Release date
      • October 18, 2012 (South Korea)
    • Country of origin
      • South Korea
    • Official sites
      • Official site (Japan)
      • Official site (South Korea)
    • Language
      • Korean
    • Also known as
      • 嫌疑犯X
    • Production companies
      • K&Entertainment
      • CJ Entertainment
    • See more company credits at IMDbPro

    Box office

    Edit
    • Gross worldwide
      • $10,187,540
    See detailed box office info on IMDbPro

    Tech specs

    Edit
    • Runtime
      • 1h 59m(119 min)
    • Color
      • Color
    • Sound mix
      • Dolby Digital
    • Aspect ratio
      • 2.35 : 1

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