tables > factorial > f2-1

n!! - 1

Table

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

* 245: \[245!!-1\] 2 × 491 × 255137 × [26198706337779848221517038316937592925258471316239223082593484733272095365238169710082761463052670319924212965888002338983957333316760913762512010983494190427731210652866995163196240689314055016283443261637816009951098648198408404261<233>]

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