Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 413: | \[{7^{413}-1\over6}\] | 29 × 4733 × 459257 × 2094737 × 134927809 × 550413361 × 354639323684545612988577649<27> × 1856688483235393866448784969<28> × 112973432365763374259029418243917224029093<42> × 11838186665371524135112487663262769193087880357344613650265205952745591351133580113<83> × 204664070711402512401356466917674623226534551322241520048756598740516419772143682168079791264413379946951729319676412262599715933000021237<138> |