1. Numbers
  2. Compare 19991 vs 20000

Compare 19991 vs 20000

Property1999120000
Typeprimecomposite number
Unique factors12
Total factors19
Prime factorization19991125 × 54
Prime factorization199912 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5
Divisors count230
Divisors1, 199911, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 4000, 5000, 10000, 20000
Number of properties90
Additive primes1049th 
Chen primes1111th 
Harmonic primes820th 
Palindromic primes46th 
Primes2260th 
Prime triplets (1st member)168th 
Sexy primes (1st member)693rd 
Sophie germain primes326th 
Twin primes (1st member)342nd 
Roman numberals  
Base 210011100001011121001110001000002
Base 31000102102310001022023
Base 4103201134103202004
Base 51114431511200005
Base 623231562323326
Base 711216671122117
Base 8470278470408
Base 9303729303829
Base 1019991102000010
Base 1114024111403211
Base 12b69b12b6a812
Base 13913a13914613
Base 1473dd14740814
Base 155dcb155dd515
Base 164e17164e2016
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