Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 248: | \[{10^{248}-1\over9}\] | 11 × 73 × 101 × 137 × 1489 × 2791 × 2049349 × 6943319 × 640543322297<12> × 27908132670449<14> × 57336415063790604359<20> × 384705444182230291105649<24> × 909090909090909090909090909091<30> × 483128549554512237305554588359039822397307149685578249<54> × 97645954668018846467287180866355758374263120864803042536883990817097<68> |