Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 200: | \[{7^{200}-1\over6}\] | 25 × 54 × 11 × 41 × 101 × 191 × 281 × 401 × 1201 × 2551 × 2801 × 4021 × 13001 × 25301 × 810221830361<12> × 31280679788951<14> × 79787519018560501<17> × 38327966300231909291101<23> × 101087819444250339960209489699235199115942108498312937463657783601<66> |