1. Numbers
  2. Compare 1997 vs 1999

Compare 1997 vs 1999

Property19971999
Typeprimeprime
Unique factors11
Total factors11
Prime factorization1997119991
Prime factorization19971999
Divisors count22
Divisors1, 19971, 1999
Number of properties108
Centered triangular primes 10th
Chen primes185th 
Cousin primes (1st member) 65th
Cousin primes (2nd member)64th 
Good primes64th 
Left-truncatable primes62nd 
Primes302nd303rd
Prime triplets (1st member)50th 
Prime triplets (2nd member)49th50th
Prime triplets (3rd member) 49th
Pythagorean primes147th 
Sexy primes (1st member)129th 
Sexy primes (2nd member) 128th
Sexy prime triplets (3rd member) 50th
Twin primes (1st member)61st 
Twin primes (2nd member) 61st
Roman numberalsMCMXCVIIMCMXCIX
Base 2111110011012111110011112
Base 32201222322020013
Base 413303141330334
Base 5304425304445
Base 6131256131316
Base 75552755547
Base 83715837178
Base 92658926619
Base 10199710199910
Base 11155611155811
Base 1211a51211a712
Base 13ba813baa13
Base 14a2914a2b14
Base 158d2158d415
Base 167cd167cf16
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