# self-descriptive number

> b-digit long integer m in a given base b where each digit d at position n counts how many instances of digit n are in m

**Wikidata**: [Q1781115](https://www.wikidata.org/wiki/Q1781115)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Self-descriptive_number)  
**Source**: https://4ort.xyz/entity/self-descriptive-number


## References

1. Freebase Data Dumps. 2013