Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 180: | \[{5^{180}-1\over4}\] | 22 × 33 × 7 × 11 × 13 × 19 × 31 × 37 × 41 × 61 × 71 × 181 × 521 × 601 × 829 × 1171 × 1741 × 2281 × 5167 × 7621 × 9161 × 169831 × 6597973 × 20478961 × 69566521 × 297315901 × 6794091374761<13> × 25535754811081<14> × 60081451169922001<17> |