Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 46: | \[{20^{46}-1\over19}\] | 3 × 7 × 47 × 461 × 691 × 1381 × 563041 × 3274400525856244223<19> × 46266279097921483078651<23> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 46: | \[{20^{46}-1\over19}\] | 3 × 7 × 47 × 461 × 691 × 1381 × 563041 × 3274400525856244223<19> × 46266279097921483078651<23> |