1. Numbers
  2. Compare 19989 vs 19991

Compare 19989 vs 19991

Property1998919991
Typecomposite numberprime
Unique factors21
Total factors31
Prime factorization32 × 22211199911
Prime factorization3 × 3 × 222119991
Divisors count62
Divisors1, 3, 9, 2221, 6663, 199891, 19991
Number of properties09
Additive primes 1049th
Chen primes 1111th
Harmonic primes 820th
Palindromic primes 46th
Primes 2260th
Prime triplets (1st member) 168th
Sexy primes (1st member) 693rd
Sophie germain primes 326th
Twin primes (1st member) 342nd
Roman numberals  
Base 210011100001010121001110000101112
Base 31000102100310001021023
Base 4103201114103201134
Base 51114424511144315
Base 623231362323156
Base 711216471121667
Base 8470258470278
Base 9303709303729
Base 1019989101999110
Base 1114022111402411
Base 12b69912b69b12
Base 13913813913a13
Base 1473db1473dd14
Base 155dc9155dcb15
Base 164e15164e1716
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