1. Numbers
  2. Compare 1901 vs 1999

Compare 1901 vs 1999

Property19011999
Typeprimeprime
Unique factors11
Total factors11
Prime factorization1901119991
Prime factorization19011999
Divisors count22
Divisors1, 19011, 1999
Number of properties118
Additive primes154th 
Centered decagonal primes14th 
Centered triangular primes 10th
Chen primes179th 
Cousin primes (1st member) 65th
Emirps92nd 
Harmonic primes106th 
Isolated primes176th 
Primes291st303rd
Prime triplets (2nd member) 50th
Prime triplets (3rd member) 49th
Pythagorean primes141st 
Sexy primes (1st member)124th 
Sexy primes (2nd member) 128th
Sexy prime triplets (1st member)49th 
Sexy prime triplets (3rd member) 50th
Sophie germain primes58th 
Twin primes (2nd member) 61st
Roman numberalsMCMIMCMXCIX
Base 2111011011012111110011112
Base 32121102322020013
Base 413123141330334
Base 5301015304445
Base 6124456131316
Base 75354755547
Base 83555837178
Base 92542926619
Base 10190110199910
Base 11147911155811
Base 1211251211a712
Base 13b3313baa13
Base 1499b14a2b14
Base 1586b158d415
Base 1676d167cf16
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