Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 416: | \[{3^{416}-1\over2}\] | 26 × 5 × 17 × 41 × 53 × 193 × 1249 × 13729 × 398581 × 797161 × 1614913 × 20634017 × 21523361 × 475356961 × 2093124281 × 4795973261<10> × 37644053098601<14> × 2763736726854088129<19> × 780464337846444296785447886881<30> × 439593550072300534251634135007764475254567347223143808588769<60> |