Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
64: | \[{29^{64}-1\over28}\] | 26 × 3 × 5 × 17 × 193 × 421 × 26209 × 353641 × 561377 × 63354497 × 125123236840173674393761<24> × 2560773582536027001020194716916748801<37> |