1. Numbers
  2. Compare 1987 vs 1989

Compare 1987 vs 1989

Property19871989
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization1987132 × 131 × 171
Prime factorization19873 × 3 × 13 × 17
Divisors count212
Divisors1, 19871, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989
Number of properties60
Good primes62nd 
Isolated primes181st 
Lucky primes70th 
Primes300th 
Sexy primes (1st member)127th 
Sexy prime triplets (1st member)50th 
Roman numberalsMCMLXXXVIIMCMLXXXIX
Base 2111110000112111110001012
Base 32201121322012003
Base 413300341330114
Base 5304225304245
Base 6131116131136
Base 75536755417
Base 83703837058
Base 92647926509
Base 10198710198910
Base 11154711154911
Base 12119712119912
Base 13b9b13ba013
Base 14a1d14a2114
Base 158c7158c915
Base 167c3167c516
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