Base 24 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
51: | \[{24^{51}-1\over23}\] | 307 × 601 × 1531 × 2347 × 120574031 × 6166060753<10> × 341563234253<12> × 6350554777870593623521962481<28> |