1. Numbers
  2. Compare 1997 vs 2309

Compare 1997 vs 2309

Property19972309
Typeprimeprime
Unique factors11
Total factors11
Prime factorization1997123091
Prime factorization19972309
Divisors count22
Divisors1, 19971, 2309
Number of properties107
Chen primes185th208th
Cousin primes (2nd member)64th 
Good primes64th 
Happy primes 60th
Harmonic primes 127th
Left-truncatable primes62nd 
Long primes 134th
Primes302nd343rd
Prime triplets (1st member)50th 
Prime triplets (2nd member)49th 
Pythagorean primes147th168th
Sexy primes (1st member)129th 
Twin primes (1st member)61st70th
Roman numberalsMCMXCVIIMMCCCIX
Base 21111100110121001000001012
Base 322012223100111123
Base 413303142100114
Base 5304425332145
Base 6131256144056
Base 75552765067
Base 83715844058
Base 92658931459
Base 10199710230910
Base 11155611180a11
Base 1211a512140512
Base 13ba813108813
Base 14a2914bad14
Base 158d215a3e15
Base 167cd1690516
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