1. Numbers
  2. Compare 19997 vs 20639

Compare 19997 vs 20639

Property1999720639
Typeprimeprime
Unique factors11
Total factors11
Prime factorization199971206391
Prime factorization1999720639
Divisors count22
Divisors1, 199971, 20639
Number of properties94
Chen primes1112th1143rd
Cousin primes (2nd member)344th 
Happy primes377th384th
Harmonic primes821st 
Isolated primes1579th 
Primes2262nd2326th
Prime triplets (3rd member)168th 
Pythagorean primes1125th 
Sexy primes (2nd member)693rd 
Twin primes (1st member) 351st
Roman numberals  
Base 210011100001110121010000100111112
Base 31000102122310010221023
Base 4103201314110021334
Base 51114442511300245
Base 623232562353156
Base 711220571141137
Base 8470358502378
Base 9303789312729
Base 1019997102063910
Base 111402a111456311
Base 12b6a512bb3b12
Base 13914313951813
Base 14740514774314
Base 155dd21561ae15
Base 164e1d16509f16
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