Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 73: | \[{7^{73}-1\over6}\] | 439 × 3675989 × 359390389 × 1958423494433591<16> × 7222605228105536202757606969<28> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 73: | \[{7^{73}-1\over6}\] | 439 × 3675989 × 359390389 × 1958423494433591<16> × 7222605228105536202757606969<28> |