Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 345: | \[{7^{345}-1\over6}\] | 3 × 19 × 31 × 47 × 139 × 691 × 1151 × 1381 × 2801 × 3083 × 159871 × 188831 × 1446701 × 402011881627<12> × 723461377501<12> × 31479823396757<14> × 430907693063791<15> × 376720035234076771<18> × 27229507836853201541<20> × 235169662395069356312233<24> × 13349802972012134814680881<26> × 32338809757665390121614112981<29> × 35136774371091884747048323143601<32> × 874171291275910894779125444085099284249866236093739291<54> |