n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 293: | \[293!!-1\] | 2 × 397 × 74323 × 410749 × 240748898183<12> × 68201647111784363<17> × 1305614630654352564687703<25> × 182234269638455047014665369<27> × [1512990325171938947387128926791588384007156818024253143791597725843234783098675505894191588323851207076104398625796313697740481617603819594397708378927029293773946263460038050424440369812778380233400517980391<208>] |