n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
120: | \[120!!+1\] | 61 × 157269589866163720571999015535562658773483441682104752399411380250726154024406751104419672131147541<99> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
120: | \[120!!+1\] | 61 × 157269589866163720571999015535562658773483441682104752399411380250726154024406751104419672131147541<99> |