n# + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 54: | \[251\#+1\] | 2963206058339377313<19> × 21688107290764790038754426395595965744305505433624069834793285242480984193453938087<83> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 54: | \[251\#+1\] | 2963206058339377313<19> × 21688107290764790038754426395595965744305505433624069834793285242480984193453938087<83> |