1. Numbers
  2. Compare 21990 vs 21997

Compare 21990 vs 21997

Property2199021997
Typecomposite numberprime
Unique factors41
Total factors41
Prime factorization21 × 31 × 51 × 7331219971
Prime factorization2 × 3 × 5 × 73321997
Divisors count162
Divisors1, 2, 3, 5, 6, 10, 15, 30, 733, 1466, 2199, 3665, 4398, 7330, 10995, 219901, 21997
Number of properties08
Chen primes 1209th
Isolated primes 1721st
Left-truncatable primes 173rd
Primes 2464th
Pythagorean primes 1223rd
Sexy primes (1st member) 743rd
Sexy primes (2nd member) 742nd
Sexy prime triplets (2nd member) 202nd
Roman numberals  
Base 210101011110011021010101111011012
Base 31010011110310100112013
Base 4111132124111132314
Base 51200430512004425
Base 624545062455016
Base 712105371210637
Base 8527468527558
Base 9331439331519
Base 1021990102199710
Base 1115581111558811
Base 1210886121089112
Base 13a01713a02113
Base 14802a14803314
Base 1567b01567b715
Base 1655e61655ed16
This website uses cookies to ensure you get the best experience on our website. More info