1. Numbers
  2. Compare 21389 vs 21391

Compare 21389 vs 21391

Property2138921391
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization731 × 2931213911
Prime factorization73 × 29321391
Divisors count42
Divisors1, 73, 293, 213891, 21391
Number of properties13
Isolated primes 1676th
Primes 2401st
Semiprimes5420th 
Sexy primes (1st member) 729th
Roman numberals  
Base 210100111000110121010011100011112
Base 31002100012310021000213
Base 4110320314110320334
Base 51141024511410315
Base 624300562430116
Base 711623471162367
Base 8516158516178
Base 9323059323079
Base 1021389102139110
Base 1115085111508711
Base 1210465121046712
Base 13997413997613
Base 147b1b147b1d14
Base 15650e15651115
Base 16538d16538f16
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