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: \[263!!-1\] 23 × 11379737248727<14> × [328097124677590437053648945555966413873508332240491280140103839622164679006189503207036415694426890577839323561165144604034746533041073071557634998170530302325889671554568390681871345567761618301061237384356789089627013352886287612754189303134973339<249>]

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