tables > factorial > f2-1

n!! - 1

Table

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

* 284: \[284!!-1\] 353 × 6343 × 1672017327251775307015603<25> × [401390084065602309412089418720124482998890317104461604997464557092684838343463623937910338253555337518696695695904183828008153722002495559071298940991113358476814170235997853473172497868183756886839312766922583646159017548343260124322974553761321321604965427<258>]

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