tables > factorial > f2+1

n!! + 1

Table

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Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

* 321: \[321!!+1\] 2 × 9203 × 238412431802807511484061<24> × [2246456660277338551522758644439495754443205530050847849089340032763373661351833135560753955195953864727672215402821416327940142569605879126298288538404480908759521378138408205997333162953231150885974075510714478524464565058467771660710483607594863943203693332712022129514917488547425220585798113453028110711<307>]

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