1. Numbers
  2. Compare 21997 vs 21999

Compare 21997 vs 21999

Property2199721999
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization21997131 × 73331
Prime factorization219973 × 7333
Divisors count24
Divisors1, 219971, 3, 7333, 21999
Number of properties81
Chen primes1209th 
Isolated primes1721st 
Left-truncatable primes173rd 
Primes2464th 
Pythagorean primes1223rd 
Semiprimes 5554th
Sexy primes (1st member)743rd 
Sexy primes (2nd member)742nd 
Sexy prime triplets (2nd member)202nd 
Roman numberals  
Base 210101011110110121010101111011112
Base 31010011201310100112103
Base 4111132314111132334
Base 51200442512004445
Base 624550162455036
Base 712106371210657
Base 8527558527578
Base 9331519331539
Base 1021997102199910
Base 1115588111558a11
Base 1210891121089312
Base 13a02113a02313
Base 14803314803514
Base 1567b71567b915
Base 1655ed1655ef16
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