1. Numbers
  2. Compare 1663 vs 1666

Compare 1663 vs 1666

Property16631666
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization1663121 × 72 × 171
Prime factorization16632 × 7 × 7 × 17
Divisors count212
Divisors1, 16631, 2, 7, 14, 17, 34, 49, 98, 119, 238, 833, 1666
Number of properties110
Cousin primes (1st member)59th 
Happy primes50th 
Harmonic primes91st 
Isolated primes158th 
Long primes102nd 
Lucky primes62nd 
Primes261st 
Prime triplets (1st member)43rd 
Sexy primes (1st member)113th 
Sexy primes (2nd member)112th 
Sexy prime triplets (2nd member)43rd 
Roman numberalsMDCLXIIIMDCLXVI
Base 2110011111112110100000102
Base 32021121320212013
Base 412133341220024
Base 5231235231315
Base 6114116114146
Base 74564746007
Base 83177832028
Base 92247922519
Base 10166310166610
Base 11128211128511
Base 12b6712b6a12
Base 139ac139b213
Base 1486b1487014
Base 1575d1576115
Base 1667f1668216
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