Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 258: | \[{7^{258}-1\over6}\] | 23 × 3 × 19 × 432 × 947 × 10837 × 19867 × 20899 × 163573 × 235211 × 3799051 × 4749781 × 1857499496101<13> × 63350976270733<14> × 166003607842448777<18> × 2192537062271178641<19> × 175446584281395198837259<24> × 499711620081214598029911373<27> × 694623197348682715265952229891<30> × 2778730173523233938297878335091<31> |