Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
142: | \[{17^{142}-1\over16}\] | 2 × 32 × 6959 × 329853647 × 55684302756949172055559448898572835958278744159529893148390882844356229681<74> × 143798195172461138521036839345269251740737334259640879028155379795667047030720519999127<87> |