Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 400: | \[{7^{400}-1\over6}\] | 26 × 54 × 11 × 17 × 41 × 101 × 191 × 281 × 401 × 881 × 1201 × 2551 × 2801 × 4021 × 13001 × 25301 × 169553 × 542081 × 210127601 × 14462056001<11> × 283231036001<12> × 810221830361<12> × 31280679788951<14> × 79787519018560501<17> × 2312581841562813841<19> × 38327966300231909291101<23> × 101087819444250339960209489699235199115942108498312937463657783601<66> × 1909116451847290021279735359577575460763842365750391108892301615692484694870436858172015345043513151388401<106> |