Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
56: | \[{10^{56}-1\over9}\] | 11 × 29 × 73 × 101 × 137 × 239 × 281 × 4649 × 7841 × 909091 × 121499449 × 127522001020150503761<21> |