| Word | Digits in Telephone Number |
|---|---|
| Protoavis | 776862847 |
| Protocols | 776862657 |
| Protoderm | 776863376 |
| Protoheme | 776864363 |
| Protonate | 776866283 |
| Protonema | 776866362 |
| Protopods | 776867637 |
| Protostar | 776867827 |
| Prototype | 776868973 |
| Protoxids | 776869437 |
| Protozoal | 776869625 |
| Protozoan | 776869626 |
| Protozoic | 776869642 |
| Protozoon | 776869666 |