1. Numbers
  2. Compare 19988 vs 19991

Compare 19988 vs 19991

Property1998819991
Typecomposite numberprime
Unique factors31
Total factors41
Prime factorization22 × 191 × 2631199911
Prime factorization2 × 2 × 19 × 26319991
Divisors count122
Divisors1, 2, 4, 19, 38, 76, 263, 526, 1052, 4997, 9994, 199881, 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 210011100001010021001110000101112
Base 31000102022310001021023
Base 4103201104103201134
Base 51114423511144315
Base 623231262323156
Base 711216371121667
Base 8470248470278
Base 9303689303729
Base 1019988101999110
Base 1114021111402411
Base 12b69812b69b12
Base 13913713913a13
Base 1473da1473dd14
Base 155dc8155dcb15
Base 164e14164e1716
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