1. Numbers
  2. Compare 19997 vs 19998

Compare 19997 vs 19998

Property1999719998
Typeprimecomposite number
Unique factors14
Total factors15
Prime factorization19997121 × 32 × 111 × 1011
Prime factorization199972 × 3 × 3 × 11 × 101
Divisors count224
Divisors1, 199971, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 101, 198, 202, 303, 606, 909, 1111, 1818, 2222, 3333, 6666, 9999, 19998
Number of properties90
Chen primes1112th 
Cousin primes (2nd member)344th 
Happy primes377th 
Harmonic primes821st 
Isolated primes1579th 
Primes2262nd 
Prime triplets (3rd member)168th 
Pythagorean primes1125th 
Sexy primes (2nd member)693rd 
Roman numberals  
Base 210011100001110121001110000111102
Base 31000102122310001022003
Base 4103201314103201324
Base 51114442511144435
Base 623232562323306
Base 711220571122067
Base 8470358470368
Base 9303789303809
Base 1019997101999810
Base 111402a111403011
Base 12b6a512b6a612
Base 13914313914413
Base 14740514740614
Base 155dd2155dd315
Base 164e1d164e1e16
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