# Eddington number

> number of protons in the observable universe

**Wikidata**: [Q24434](https://www.wikidata.org/wiki/Q24434)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Eddington_number)  
**Source**: https://4ort.xyz/entity/eddington-number


## References

1. Freebase Data Dumps. 2013