tables > factorial > f2-1

n!! - 1

Table

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

* 209: \[209!!-1\] 25 × 211 × 313 × 2321281 × [491749038082913977295983912658833886131430816151421017120126748002617100167199137496645117074938060143042566796848438258515743415769038714449542421631006043500498934519883104922034108879<186>]

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