tables > repunit > 2

Base 2 Repunits

Table

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

643: \[2^{643}-1\] 3189281 × 22532429052605670225026391054393428833168207234802434915090881303620353<71> × 507909591297683949138862971271266635431758872031092542127980551589004038646657157217329569167343063743426799521984799<117>

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