1. Numbers
  2. Compare 21017 vs 21028

Compare 21017 vs 21028

Property2101721028
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization21017122 × 71 × 7511
Prime factorization210172 × 2 × 7 × 751
Divisors count212
Divisors1, 210171, 2, 4, 7, 14, 28, 751, 1502, 3004, 5257, 10514, 21028
Number of properties160
Additive primes1096th 
Chen primes1164th 
Cousin primes (2nd member)358th 
Long primes898th 
Primes2364th 
Prime quadruplets (3rd member)20th 
Prime quintuplet 2s (3rd member)7th 
Prime triplets (1st member)177th 
Prime triplets (2nd member)176th 
Prime triplets (3rd member)175th 
Pythagorean primes1175th 
Sexy primes (1st member)716th 
Sexy primes (2nd member)714th 
Sexy prime triplets (2nd member)196th 
Twin primes (1st member)359th 
Ulam primes177th 
Roman numberals  
Base 210100100001100121010010001001002
Base 31001211102310012112113
Base 4110201214110202104
Base 51133032511331035
Base 624114562412046
Base 711516371152107
Base 8510318510448
Base 9317429317549
Base 1021017102102810
Base 1114877111488711
Base 12101b5121020412
Base 13974913975713
Base 14793314794014
Base 15636215636d15
Base 16521916522416
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