1. Numbers
  2. Compare 19985 vs 19991

Compare 19985 vs 19991

Property1998519991
Typecomposite numberprime
Unique factors31
Total factors31
Prime factorization51 × 71 × 5711199911
Prime factorization5 × 7 × 57119991
Divisors count82
Divisors1, 5, 7, 35, 571, 2855, 3997, 199851, 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 210011100001000121001110000101112
Base 31000102012310001021023
Base 4103201014103201134
Base 51114420511144315
Base 623230562323156
Base 711216071121667
Base 8470218470278
Base 9303659303729
Base 1019985101999110
Base 1114019111402411
Base 12b69512b69b12
Base 13913413913a13
Base 1473d71473dd14
Base 155dc5155dcb15
Base 164e11164e1716
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