1. Numbers
  2. Compare 1997 vs 2009

Compare 1997 vs 2009

Property19972009
Typeprimecomposite number
Unique factors12
Total factors13
Prime factorization1997172 × 411
Prime factorization19977 × 7 × 41
Divisors count26
Divisors1, 19971, 7, 41, 49, 287, 2009
Number of properties100
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 
Sexy primes (1st member)129th 
Twin primes (1st member)61st 
Roman numberalsMCMXCVIIMMIX
Base 2111110011012111110110012
Base 32201222322021023
Base 413303141331214
Base 5304425310145
Base 6131256131456
Base 75552756007
Base 83715837318
Base 92658926729
Base 10199710200910
Base 11155611156711
Base 1211a51211b512
Base 13ba813bb713
Base 14a2914a3714
Base 158d2158de15
Base 167cd167d916
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