Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 61: | \[{15^{61}-1\over14}\] | 367 × 7321 × 220692472927167836907173<24> × 66437728342254817921459404330630159646331<41> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 61: | \[{15^{61}-1\over14}\] | 367 × 7321 × 220692472927167836907173<24> × 66437728342254817921459404330630159646331<41> |