Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 47: | \[{31^{47}-1\over30}\] | 3128573142495569<16> × 170942984502845969696543<24> × 773892718948740289245597142031<30> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 47: | \[{31^{47}-1\over30}\] | 3128573142495569<16> × 170942984502845969696543<24> × 773892718948740289245597142031<30> |