Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
54: | \[{19^{54}-1\over18}\] | 22 × 33 × 5 × 73 × 127 × 199 × 487 × 523 × 29989 × 41203 × 216919 × 236377 × 907471 × 2522827 × 362063089 × 1001724990823<13> |