Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
167: | \[{19^{167}-1\over18}\] | 34862921 × 39952747 × 3806582228521<13> × 67776489779253053011<20> × 550876376748993765353502657326744598247019665269085358612501316205255218575870130778277839785999968558469140872115810494800770811021372074379641532457607300192724853<165> |