n# + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
57: | \[269\#+1\] | 17291 × 805843 × 531489841545151<15> × 157782611915901401803897737306242805109993087715626214300035043814049589566781571917<84> |