Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{16^{40}-1\over15}\] | 5 × 11 × 17 × 31 × 41 × 257 × 61681 × 65537 × 414721 × 4278255361 × 44479210368001<14> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{16^{40}-1\over15}\] | 5 × 11 × 17 × 31 × 41 × 257 × 61681 × 65537 × 414721 × 4278255361 × 44479210368001<14> |