Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
78: | \[{23^{78}-1\over22}\] | 23 × 32 × 7 × 133 × 79 × 859 × 47691619 × 480393499 × 1489531614247<13> × 21001515080686141<17> × 30125172037951849<17> × 459408054528299360264076035007841<33> |