1. Numbers
  2. Compare 19991 vs 20897

Compare 19991 vs 20897

Property1999120897
Typeprimeprime
Unique factors11
Total factors11
Prime factorization199911208971
Prime factorization1999120897
Divisors count22
Divisors1, 199911, 20897
Number of properties99
Additive primes1049th 
Chen primes1111th1156th
Good primes 264th
Harmonic primes820th861st
Long primes 893rd
Palindromic primes46th 
Primes2260th2350th
Prime triplets (1st member)168th174th
Pythagorean primes 1169th
Sexy primes (1st member)693rd713th
Sophie germain primes326th 
Twin primes (1st member)342nd356th
Roman numberals  
Base 210011100001011121010001101000012
Base 31000102102310011222223
Base 4103201134110122014
Base 51114431511320425
Base 623231562404256
Base 711216671146327
Base 8470278506418
Base 9303729315889
Base 1019991102089710
Base 1114024111477811
Base 12b69b121011512
Base 13913a13968613
Base 1473dd14788914
Base 155dcb1562d215
Base 164e171651a116
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