Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 388: | \[{8^{388}-1\over7}\] | 32 × 5 × 13 × 389 × 971 × 1553 × 3881 × 4657 × 5821 × 11447 × 25609 × 31817 × 272959 × 580837 × 856752889 × 2065304407 × 3555339061 × 4959325597<10> × 5434876633<10> × 394563864677<12> × 17637260034881<14> × 5636963037465601<16> × 7570390327211773<16> × 69186562412120809<17> × 581546606903256979<18> × 1100876018364883721<19> × 99695503427255026561<20> × 3687531861438052950582913<25> × 13842607235828485645766393<26> × 1170711644777651877659556633665719<34> × 50455592168903227107903715726570129520096917<44> |