Professor Dave Explains vs Extra History
United States
| 4.4M | Subscribers | 4.6M |
|---|---|---|
| 529.8M | Total views | 1.7B |
| 2,120 | Videos | 1,346 |
| 249.9K | Avg views / video | 1.3M |
| #1,905 | Worldwide rank | #1,805 |
| 2015 | Active since | 2011 |
| Education | Top category | Education |
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