Compare 1663 vs 1999

Unique factors11
Total factors11
Prime factorization1663119991
Prime factorization16631999
Divisors count22
Divisors1, 16631, 1999
Number of properties118
Centered triangular primes 10th
Cousin primes (1st member)59th65th
Happy primes50th 
Harmonic primes91st 
Isolated primes158th 
Long primes102nd 
Lucky primes62nd 
Prime triplets (1st member)43rd 
Prime triplets (2nd member) 50th
Prime triplets (3rd member) 49th
Sexy primes (1st member)113th 
Sexy primes (2nd member)112th128th
Sexy prime triplets (2nd member)43rd 
Sexy prime triplets (3rd member) 50th
Twin primes (2nd member) 61st
Base 2110011111112111110011112
Base 32021121322020013
Base 412133341330334
Base 5231235304445
Base 6114116131316
Base 74564755547
Base 83177837178
Base 92247926619
Base 10166310199910
Base 11128211155811
Base 12b671211a712
Base 139ac13baa13
Base 1486b14a2b14
Base 1575d158d415
Base 1667f167cf16
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