Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 176: | \[{15^{176}-1\over14}\] | 27 × 17 × 23 × 67 × 89 × 113 × 353 × 463 × 617 × 1489 × 2333 × 3697 × 7121 × 8537 × 179953 × 23504771357<11> × 62263707129997297<17> × 1285545509619454513<19> × 536554814380116068153<21> × 1242372349304878460334100748539075308315312809<46> × 117045342807388847019154505615420641007026154406029201<54> |