tables > repunit > 21

Base 21 Repunits

Table

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

269: \[{21^{269}-1\over20}\] 3229 × 1257086300416475187195389<25> × 585500336786185958636423956394934972525391891372508132781128058693803801702718372074174223182883419352274433576091451465607195703299903633364190033148451636454189619587515209426892032349408152838323024151011825915342875463956707858185827127031022563263866459267363822124065475460112325985294799503593833643895925175824853886269<327>

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