tables > repunit > base20

Base 20 Repunits

Table

Viewing: 21 – 21 << prev next >>

(available: 0-999)

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

21: \[{20^{21}-1\over19}\] 29 × 71 × 421 × 32719 × 460951 × 8442733531<10>

Index range: 21 – 21 << prev next >>