Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 118: | \[{28^{118}-1\over27}\] | 29 × 709 × 1063 × 62423 × 2357237985408057691<19> × 32838214266689135929<20> × 87134177825869551823<20> × 242745963119086719066117209369810056829<39> × 9643579894368157824900039911930865360964315755820145323893317<61> |