Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 155: | \[{9^{155}-1\over8}\] | 112 × 61 × 311 × 683 × 1861 × 6883 × 102673 × 4404047 × 3586225081 × 22434744889<11> × 33131555630426311<17> × 318620421994509961<18> × 121462982451478217731<21> × 1078579799806668629607014283525941686969924751<46> |