1. Numbers
  2. Compare 19991 vs 21017

Compare 19991 vs 21017

Property1999121017
Typeprimeprime
Unique factors11
Total factors11
Prime factorization199911210171
Prime factorization1999121017
Divisors count22
Divisors1, 199911, 21017
Number of properties916
Additive primes1049th1096th
Chen primes1111th1164th
Cousin primes (2nd member) 358th
Harmonic primes820th 
Long primes 898th
Palindromic primes46th 
Primes2260th2364th
Prime quadruplets (3rd member) 20th
Prime quintuplet 2s (3rd member) 7th
Prime triplets (1st member)168th177th
Prime triplets (2nd member) 176th
Prime triplets (3rd member) 175th
Pythagorean primes 1175th
Sexy primes (1st member)693rd716th
Sexy primes (2nd member) 714th
Sexy prime triplets (2nd member) 196th
Sophie germain primes326th 
Twin primes (1st member)342nd359th
Ulam primes 177th
Roman numberals  
Base 210011100001011121010010000110012
Base 31000102102310012111023
Base 4103201134110201214
Base 51114431511330325
Base 623231562411456
Base 711216671151637
Base 8470278510318
Base 9303729317429
Base 1019991102101710
Base 1114024111487711
Base 12b69b12101b512
Base 13913a13974913
Base 1473dd14793314
Base 155dcb15636215
Base 164e1716521916
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