n# - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
64: | \[311\#-1\] | 166661291 × 4886278425797257511145616469<28> × 239618257910022422067744520659156141986799288400519732643514534194268961208837534286635111<90> |