# Ramanujan–Nagell equation

> the Diophantine equation 2ⁿ−7=𝑥²

**Wikidata**: [Q1914905](https://www.wikidata.org/wiki/Q1914905)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ramanujan–Nagell_equation)  
**Source**: https://4ort.xyz/entity/ramanujan-nagell-equation


## References

1. Freebase Data Dumps. 2013