tables > factorial > f2+1

n!! + 1

Table

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

* 263: \[263!!+1\] 2 × 281 × 2623039 × [20262059324192200891843563437015458862589035311293739367983176749284781802918162972729457257636187615909554840958391208385141043005805731773601017916260401656440033095343311518219455583979230306754645431702771986838492661749252189564049862059503393203907<254>]

Index range: 263 – 263 << prev next >>