1. Numbers
  2. Compare 1663 vs 1997

Compare 1663 vs 1997

Property16631997
Typeprimeprime
Unique factors11
Total factors11
Prime factorization1663119971
Prime factorization16631997
Divisors count22
Divisors1, 16631, 1997
Number of properties1110
Chen primes 185th
Cousin primes (1st member)59th 
Cousin primes (2nd member) 64th
Good primes 64th
Happy primes50th 
Harmonic primes91st 
Isolated primes158th 
Left-truncatable primes 62nd
Long primes102nd 
Lucky primes62nd 
Primes261st302nd
Prime triplets (1st member)43rd50th
Prime triplets (2nd member) 49th
Pythagorean primes 147th
Sexy primes (1st member)113th129th
Sexy primes (2nd member)112th 
Sexy prime triplets (2nd member)43rd 
Twin primes (1st member) 61st
Roman numberalsMDCLXIIIMCMXCVII
Base 2110011111112111110011012
Base 32021121322012223
Base 412133341330314
Base 5231235304425
Base 6114116131256
Base 74564755527
Base 83177837158
Base 92247926589
Base 10166310199710
Base 11128211155611
Base 12b671211a512
Base 139ac13ba813
Base 1486b14a2914
Base 1575d158d215
Base 1667f167cd16
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