Srinivasa Ramanujan IQ

Ramanujan never took an IQ test, and he was born after the period Cox's 1926 study covered. LifeScore uses 170+ as an editorial marker, with a range of 155 to 185. The 100 often attached to him comes from G. H. Hardy's informal ranking of mathematicians.

Mostly on his own. As a teenager in India he worked through G. S. Carr's Synopsis, a dense list of about 5,000 results with few proofs, and then produced his own. He lost college scholarships because he neglected every subject except mathematics.

The number is not an IQ score. It comes from an informal scale G. H. Hardy used for natural mathematical talent, as retold by colleagues such as Paul Erdős.

On that scale Hardy gave himself 25, J. E. Littlewood 30, David Hilbert 80 and Ramanujan 100. It was a way of saying Ramanujan was in a different class, not a measurement.

The story is widely repeated and not documented in Hardy's own published writing, so treat it as anecdote.

Ramanujan worked by intuition and computation, finding formulas that he checked with examples but often could not prove in the formal way Cambridge expected. Hardy supplied the rigour. Ramanujan supplied results nobody else would have guessed.

What supports it

• Largely self-taught, he sent G. H. Hardy a 1913 letter packed with theorems, some new, some known and a few wrong.
• With Hardy he found an asymptotic formula for the partition function, a landmark in analytic number theory.
• He was elected a Fellow of the Royal Society in 1918, one of the youngest in its history at that point.

What it cannot prove

• He lost college scholarships by neglecting subjects other than mathematics, so academic records understate him.
• His notebooks mixed proofs with unproved results, which makes the scale of insight hard to measure.
• No psychometric record exists.

Srinivasa Ramanujan's IQ is represented here by a retrospective estimate of 170+, not a verified test result. Srinivasa Ramanujan is best known for exceptional mathematical intuition. The useful question is what the surviving evidence shows, not whether a precise modern score can be recovered.

Largely self-taught and deeply intuitive. Saw results before he could prove them.

The dominant archetype here is The Visionary. This archetype shapes decision patterns: what feels natural, what creates friction, and what blind spots tend to emerge.

Estimated IQ is 170+. This is a rough estimate based on documented accomplishments and contemporary accounts, not a literal measurement.

1729 is called the Hardy–Ramanujan number: the smallest number that is the sum of two cubes in two different ways.

Srinivasa Ramanujan's estimate of 170+ falls in the profoundly gifted IQ range. See what an IQ of 170 means, place it on the IQ chart or check how rare it is with the IQ rarity calculator.