1. Numbers
  2. Compare 19991 vs 21011

Compare 19991 vs 21011

Property1999121011
Typeprimeprime
Unique factors11
Total factors11
Prime factorization199911210111
Prime factorization1999121011
Divisors count22
Divisors1, 199911, 21011
Number of properties912
Additive primes1049th1094th
Chen primes1111th1163rd
Happy primes 391st
Harmonic primes820th 
Long primes 897th
Palindromic primes46th 
Primes2260th2362nd
Prime quadruplets (1st member) 20th
Prime quintuplet 2s (1st member) 7th
Prime triplets (1st member)168th175th
Sexy primes (1st member)693rd714th
Sexy prime triplets (1st member) 196th
Sophie germain primes326th342nd
Twin primes (1st member)342nd358th
Roman numberals  
Base 210011100001011121010010000100112
Base 31000102102310012110123
Base 4103201134110201034
Base 51114431511330215
Base 623231562411356
Base 711216671151547
Base 8470278510238
Base 9303729317359
Base 1019991102101110
Base 1114024111487111
Base 12b69b12101ab12
Base 13913a13974313
Base 1473dd14792b14
Base 155dcb15635b15
Base 164e1716521316
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