Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 57: | \[{15^{57}-1\over14}\] | 241 × 4272113 × 292582141 × 370649274902657<15> × 6969521913939651515520634098282421<34> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 57: | \[{15^{57}-1\over14}\] | 241 × 4272113 × 292582141 × 370649274902657<15> × 6969521913939651515520634098282421<34> |