Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
40: | \[{29^{40}-1\over28}\] | 23 × 3 × 52 × 11 × 31 × 41 × 401 × 421 × 1061 × 353641 × 732541 × 470925821 × 6103563899172302171321<22> |