1. Numbers
  2. Compare 19891 vs 19991

Compare 19891 vs 19991

Property1989119991
Typeprimeprime
Unique factors11
Total factors11
Prime factorization198911199911
Prime factorization1989119991
Divisors count22
Divisors1, 198911, 19991
Number of properties49
Additive primes 1049th
Chen primes 1111th
Harmonic primes815th820th
Palindromic primes45th46th
Primes2250th2260th
Prime triplets (1st member) 168th
Sexy primes (1st member) 693rd
Sophie germain primes 326th
Twin primes (1st member) 342nd
Twin primes (2nd member)340th 
Roman numberals  
Base 210011011011001121001110000101112
Base 31000021201310001021023
Base 4103123034103201134
Base 51114031511144315
Base 623203162323156
Base 711166471121667
Base 8466638470278
Base 9302519303729
Base 1019891101999110
Base 1113a43111402411
Base 12b61712b69b12
Base 13909113913a13
Base 14736b1473dd14
Base 155d61155dcb15
Base 164db3164e1716
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