Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
76: | \[{10^{76}-1\over9}\] | 11 × 101 × 722817036322379041<18> × 909090909090909091<18> × 1111111111111111111<19> × 1369778187490592461<19> |