tables > repunit > 2

Base 2 Repunits

Table

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

222: \[2^{222}-1\] 32 × 7 × 223 × 1777 × 3331 × 17539 × 321679 × 25781083 × 26295457 × 319020217 × 616318177 × 107775231312019<15>

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