125 user 121 critic

The Man Who Knew Infinity (2015)

PG-13 | | Biography, Drama | 29 April 2016 (USA)
1:31 | Trailer

Watch Now

From $2.99 on Prime Video

The story of the life and academic career of the pioneer Indian mathematician, Srinivasa Ramanujan, and his friendship with his mentor, Professor G.H. Hardy.


Matt Brown (as Matthew Brown)


Matt Brown (screenplay), Matt Brown | 1 more credit »
4,571 ( 299)
1 win & 1 nomination. See more awards »





Cast overview, first billed only:
Jeremy Irons ... G.H. Hardy
Dev Patel ... S. Ramanujan
Malcolm Sinclair ... Professor Cartwright
Raghuvir Joshi Raghuvir Joshi ... Narasimha
Dhritiman Chatterjee ... Narayana Iyer (as Dhritiman Chaterji)
Stephen Fry ... Sir Francis Spring
Arundathi Nag Arundathi Nag ... Komalatammal
Devika Bhise ... Janaki
Pádraic Delaney ... Beglan
Toby Jones ... Littlewood
Jeremy Northam ... Bertrand Russell
San Shella ... Dr. Muthu
Richard Cunningham ... Hobson
Thomas Bewley Thomas Bewley ... Baker
Anthony Calf ... Howard


In the 1910s, Srinivasa Ramanujan is a man of boundless intelligence that even the abject poverty of his home in Madras, India, cannot crush. Eventually, his stellar intelligence in mathematics and his boundless confidence in both attract the attention of the noted British mathematics professor, G.H. Hardy, who invites him to further develop his computations at Trinity College at Cambridge. Forced to leave his young wife, Janaki, behind, Ramanujan finds himself in a land where both his largely intuitive mathematical theories and his cultural values run headlong into both the stringent academic requirements of his school and mentor and the prejudiced realities of a Britain heading into World War One. Facing this with a family back home determined to keep him from his wife and his own declining health, Ramanujan joins with Hardy in a mutual struggle that would define Ramanujan as one of India's greatest modern scholars who broke more than one barrier in his worlds. Written by Kenneth Chisholm (kchishol@rogers.com)

Plot Summary | Add Synopsis


An equation has no meaning to me unless it expresses a thought of god.". See more »


Biography | Drama

Motion Picture Rating (MPAA)

Rated PG-13 for some thematic elements and smoking | See all certifications »

Parents Guide:

View content advisory »





English | Tamil | Sanskrit

Release Date:

29 April 2016 (USA) See more »

Also Known As:

El hombre que conocía el infinito See more »


Box Office


$10,000,000 (estimated)

Opening Weekend USA:

$80,325, 1 May 2016, Limited Release

Gross USA:


Cumulative Worldwide Gross:

See more on IMDbPro »

Company Credits

Show more on IMDbPro »

Technical Specs




Aspect Ratio:

2.39 : 1
See full technical specs »

Did You Know?


Stephen Fry and Jeremy Northam previously appeared in Gosford Park (2001). See more »


Ramanujan being a devout Vaishnava Iyengar Brahmin, doesn't worship Lord Ganesh(elephant faced god) as shown in the film when he goes to England(washes deities in a bowl of water). See more »


Major MacMahon: Now, how high I have to go?
S. Ramanujan: P of 200 should do. I really can do it.
See more »

Crazy Credits

Card before the title: "Mathematics, rightly viewed, possesses not only truth but supreme beauty." - Bertrand Russell See more »


Referenced in Jeopardy!: Episode #33.95 (2017) See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Man's recognition of a true genius and his untimely demise is the ultimate human tragedy
15 August 2016 | by organicsocialSee all my reviews

Ramanujan is a name like Beethoven or Picaso. You don't need to know their history. You don't need to know about their life. Their work speaks for them. While common people try to review and measure what they see, geniuses imagine completely new things that could exist. The Man Who Knew Infinity is just a movie based on a book based on the life of a genius. How can we even expect it to tell us all that is there to know about him? Still, it does its job fairly and with sincerity.

The striking difference between this movie and A Beautiful Mind, another biopic about a mathematical genius, is that of the tone. Sure, the portrayal of a genius struggling with schizophrenia makes for a more compelling story but is by no means tragic. How an unlikely partnership slowly turns into a mutual respect and finally into a meaningful yet short-lived friendship is at the core of the Ramanujan-Hardy story. As Hardy addresses his interactions with Ramanujan akin to a romantic affair, he encapsulates their common passion for maths and their devotion to the craft. It was a rare symphony of two souls that happens once in ages. The profundity of that is realised when one feels the pain of Hardy in coming to terms with the fact that he'll never see Ramanujan again. For that matter both Dev Patel's and Jeremy Iron's acting are utterly spellbinding. In that regard, this movie is filled with great performers and they all do their part very satisfyingly. It is like watching good theatre.

The seemingly unnecessary struggles of a capable man can be seen as a reality check. It is almost brutal to watch our hero suffer because of some petty issues that simply grow big because of either personal inhibitions or neglect. Case in point, Ramanujan's deteriorating health. There are always worldly limitations that tend to plague the best of us. Moreover, Ramanujan lived in troubled times. He was poor and being an autodidact didn't help his cause either. Ramanujan was an exceptional man surrounded by ordinary people who did deeply care for him but hardly understood him. Hardy was probably the only one who came close to appreciating him but had no experience in dealing with such a cultural disparity. The movie doesn't try to gloss over these circumstances. These are some of the things in this period drama that set it apart. I hope the generation that seeks to alter the truth for excitement rather than get bored by the depth of emotion can fathom that.

48 of 59 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 125 user reviews »

Contribute to This Page

Stream Popular Action and Adventure Titles With Prime Video

Explore popular action and adventure titles available to stream with Prime Video.

Start your free trial

Recently Viewed