tables > repunit > 28

Base 28 Repunits

Table

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

* 221: 28221−127 53 × 12377 × 4543753614603737<16> × 148020807352107352204781<24> × [5570989752239081144981192365429855501777259365566286512625539605344922864921925773523229760036575709330027524919573831333612778985874062838928899819184639267942428200193615883567523897090996299797329681209686980777410009224689477232826262531342157133062751166805320745450093<274>]

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