Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 47: | \[{28^{47}-1\over27}\] | 6299 × 24128861 × 21277176429749<14> × 3425165712672937943<19> × 347263946374443738653441<24> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 47: | \[{28^{47}-1\over27}\] | 6299 × 24128861 × 21277176429749<14> × 3425165712672937943<19> × 347263946374443738653441<24> |