Base 30 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
57: | \[{30^{57}-1\over29}\] | 72 × 192 × 191 × 33189733 × 316011085610449051<18> × 2098323645062285611121141<25> × 728112221596422948171531823<27> |