tables > repunit > 21

Base 21 Repunits

Table

Viewing: 16 – 16 << prev next >>

(available: 0-999)

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

16: \[{21^{16}-1\over20}\] 24 × 11 × 13 × 17 × 62897 × 97241 × 300673

Index range: 16 – 16 << prev next >>