tables > repunit > 21

Base 21 Repunits

Table

Viewing: 634 – 634 << prev next >>

(available: 0-999)

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

* 634: \[{21^{634}-1\over20}\] 2 × 11 × 8243 × 568699 × 5322353287<10> × 853011327991<12> × [253525872873537932895296660181904540782217054758406518003366524318550675609932421523153217954560015780093774440735443949246289227013622251274833655938973748956125955980517484607951512006738322935122418652461991617953213290197255150073180337260787440249862537643658186686804609839480001325572659683778208226325434107306951700999544354745819642706355583774274429272731872164442435756768510207397602079<399>] × [8157022051151523561838853287964176897079908258589481769620124425152608189625722675139258607527510220589968985031110792246374622139787188781089236381534291239241918913231275081264653543091443977134239122557620392383093885383095627275731111079191097498979905492347350966577818581701858967556807865669530918986258505788171898350331155736269704214413939947366960417041865086522553495288850081304139216377529107<406>]

Index range: 634 – 634 << prev next >>