Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 328: | \[{7^{328}-1\over6}\] | 25 × 52 × 83 × 1201 × 4849399 × 8999993 × 20515909 × 33842057 × 1636258751 × 78009515593<11> × 5449628176194898649<19> × 4362139336229068656094783<25> × 141375169696201183349885463641977<33> × 215399976956807881972039163130016444991137<42> × 11618028032928487547981202103534221707621352897804451272379444081817133429524070044645985264480201699913<104> |