Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
173: | \[{11^{173}-1\over10}\] | 347 × 593979931 × 19313697101202731<17> × 36388811391554383018218783905443608269095626188949269430063577855275987589994274434452424096147141193136236807998241764226108618612630514767438060410659<152> |