03/14/2026
Most people know that π (pi) is about 3.14159…, but mathematicians have now calculated more than 314 trillion digits of it.
Even with so many digits known, no repeating pattern has ever been discovered.
The digits 0–9 appear roughly equally often, but this has never been mathematically proven to be perfectly random.
This mystery even inspired the novel Contact by Carl Sagan, where a hidden pattern is found deep within the digits of π, hinting at an advanced civilization.
Interestingly, π can also be written using a very simple infinite series:
π = 4 − 4⁄3 + 4⁄5 − 4⁄7 + 4⁄9 − 4⁄11 + …
In reality, perfectly measuring π is impossible because according to General Relativity, space itself is slightly curved, so extremely large circles in the universe may not follow the exact ratio defined by π.
