1. Numbers
  2. Compare 1997 vs 2005

Compare 1997 vs 2005

Property19972005
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization1997151 × 4011
Prime factorization19975 × 401
Divisors count24
Divisors1, 19971, 5, 401, 2005
Number of properties101
Chen primes185th 
Cousin primes (2nd member)64th 
Good primes64th 
Left-truncatable primes62nd 
Primes302nd 
Prime triplets (1st member)50th 
Prime triplets (2nd member)49th 
Pythagorean primes147th 
Semiprimes 578th
Sexy primes (1st member)129th 
Twin primes (1st member)61st 
Roman numberalsMCMXCVIIMMV
Base 2111110011012111110101012
Base 32201222322020213
Base 413303141331114
Base 5304425310105
Base 6131256131416
Base 75552755637
Base 83715837258
Base 92658926679
Base 10199710200510
Base 11155611156311
Base 1211a51211b112
Base 13ba813bb313
Base 14a2914a3314
Base 158d2158da15
Base 167cd167d516
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