tables > factorial > f2+1

n!! + 1

Table

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

* 271: \[271!!+1\] 2 × 1499 × 5869 × [8756037525172843686707423019114197401783269758915635094198908775147787814090237965290900806058630886022886771729616952713908117951490145572846729995662307716272326352858832562463287768941943197166562046271393380937764096412958583985992068699076821801067442321520823<265>]

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