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Ramanujan is the strongest case in this section against reading ability off an examination result — because both the failures and the verdict are fully documented, and they could not disagree more.
A historiometric estimate on a man whose formal education failed twice, and whose ability was concentrated to an extreme degree in one domain. Hardy’s scale is a considered expert judgement, not a measurement.
Set the claim aside for a moment. If someone genuinely scored in this range, here is what that would represent.
Average is 100 by construction, and about two-thirds of people fall between 85 and 115. Take the test to place your own score on this scale.
| Score range | Classification | Share of people | What it indicates |
|---|---|---|---|
| 85 – 114 | Average | ~68% | The range most people fall into. |
| 115 – 129 | Above average | ~13.6% | Roughly one person in seven. |
| 130 – 144 | Gifted | ~2% | The threshold most high-IQ societies use. |
| Above 144 | Highly gifted | ~0.1% | Figures above this range are extrapolated from the curve rather than measured. |
Percentages are approximate and describe a normal distribution. The same number means different things on tests with different standard deviations.
Thirty questions gives you a measured position on this exact scale — your score, your percentile and the ability breakdown behind it.
Find out in 30 minutes →Srinivasa Ramanujan was born in Erode, in what is now Tamil Nadu, in 1887 and grew up in Kumbakonam. At about fifteen he obtained a copy of G. S. Carr’s Synopsis of Elementary Results in Pure Mathematics, a bare list of some five thousand theorems, and worked through it alone, reconstructing the reasoning himself.
After failing his college examinations he worked as a clerk in Madras, doing mathematics in the margins. In 1913 he wrote to G. H. Hardy at Cambridge enclosing about 120 theorems. Hardy, having concluded that they must be true because no one would have the imagination to invent them, arranged for him to come to England the following year.
He spent five years at Trinity College, publishing with Hardy on partitions, highly composite numbers and the circle method. He was elected FRS in 1918. His health broke down and he returned to India in 1919, dying at Kumbakonam in April 1920, aged thirty-two.
The estimate above rests on this record. Every entry here is a matter of public fact, which is more than can be said for the number itself.
Following a claim back to its first appearance is the part almost nobody does — and it is what most people are actually asking.
This page contains the most useful pair of documented facts in the section, and they point in opposite directions.
The first is that Ramanujan failed. He won a scholarship to Government College, Kumbakonam, and lost it, because he neglected every subject except mathematics. He failed his First Arts examination twice, once at Kumbakonam and again after enrolling at Pachaiyappa’s College in Madras. He left without a degree and took a clerk’s post at the Madras Port Trust. On the evidence of examinations alone, he was a failed student.
The second is Hardy’s scale. Recorded by Paul Erdős and preserved by the Ramanujan scholar Bruce Berndt, Hardy privately rated mathematicians for natural ability out of 100: himself 25, his close collaborator J. E. Littlewood 30, David Hilbert — the most eminent mathematician then alive — 80, and Ramanujan 100. He was not being gallant. Hardy was a famously exacting man who described discovering Ramanujan as the one romantic incident in his life.
The examinations were not wrong about what they measured. They measured whether a young man had studied Roman history, English and physiology, and he had not. What they could not measure was the thing that made him worth a place at Trinity. That is the same failure documented on the Muhammad Ali page, arriving from an entirely different direction.
The 185 in circulation adds nothing to this. It is a number invented to summarise a story that is far more interesting told straight.
How we read a number →The primary mathematical record, including the theorems that persuaded Hardy to bring him to England.
The scholarly edition. Berndt is also the source preserving Hardy’s private rating scale as reported by Paul Erdős.
Hardy’s own assessment of Ramanujan’s ability and its limits, written twenty years after his death.
The documented failures: scholarship lost in 1905, First Arts examination failed twice.
No intelligence testing programme existed in India in his lifetime and he was never assessed. The 185 in circulation has no identified source.
The figures that circulate for Srinivasa Ramanujan, what we were able to confirm, and where the two diverge.
That his IQ was 185, a figure repeated on aggregator pages and in a great many articles about the film adaptation of his life.
India had no intelligence testing programme in Ramanujan’s lifetime and he was never assessed. The 185 has no identified source. What exists instead is better than most numbers in this section: a private rating scale kept by G. H. Hardy, the leading English mathematician of the period and the person best placed in the world to judge, on which Ramanujan received a perfect 100 and Hardy gave himself 25.
The circulating numbers vary by forty points and none of them cites anything. Hardy’s scale is not an IQ, but it is the only considered assessment anyone actually made.
Want a number that does hold up? Every figure on this page is somebody’s claim. Take the 30-question test and get a percentile you can check rather than a figure you have to trust.
Unknown. He was never tested, and no intelligence testing programme existed in India during his lifetime. The 185 that circulates online has no identified source.
Yes, twice. He lost his scholarship at Government College, Kumbakonam, in 1905 after neglecting every subject but mathematics, and failed the First Arts examination again at Pachaiyappa’s College. He never earned a degree.
A private scale of natural mathematical ability out of 100. Hardy gave himself 25, his collaborator Littlewood 30, David Hilbert 80, and Ramanujan 100. It is recorded by Paul Erdős and preserved by Bruce Berndt.
Because they measure different things. The examinations tested whether he had studied English, history and physiology, and he had not. They had no way of registering the one ability that made him extraordinary.
Roughly 3,900 results, most stated without proof and the overwhelming majority since confirmed. The mock theta functions in his “lost notebook”, found in 1976, were not fully understood for decades after his death.
Isaac Newton, Leonardo da Vinci and Marie Curie. For the same failure of an examination to measure a mind, see Muhammad Ali.
You can find out in about fifteen minutes. The IQ Metrics assessment is 30 questions, scored on the same 100-mean scale used throughout this page, so your result and the estimate above are at least expressed in the same units — one measured, one inferred. Once you have a number, the leaderboard shows where it would sit, and how we score and norm it explains the benchmarking.
From the documented record rather than a test — the method is named above and set out in full under how we read a number. Compare it against the other historical profiles, starting with Isaac Newton.
Portrait © Matthew Yohe, CC BY-SA 3.0. The background-removed portrait above is a derivative work and is likewise offered under the same licence. · Portrait © Debbie Rowe / The Royal Society, CC BY-SA 3.0. The background-removed portrait above is a derivative work and is likewise offered under the same licence. · Portrait by Christopher Smith, U.S. Department of Health and Human Services — a work of the U.S. federal government, public domain. Background removed for the portrait above.
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