1. Numbers
  2. Compare 81281 vs 81284

Compare 81281 vs 81284

Property8128181284
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization81281122 × 71 × 29031
Prime factorization812812 × 2 × 7 × 2903
Divisors count212
Divisors1, 812811, 2, 4, 7, 14, 28, 2903, 5806, 11612, 20321, 40642, 81284
Number of properties70
Centered decagonal primes61st 
Chen primes3597th 
Harmonic primes3002nd 
Primes7953rd 
Pythagorean primes3963rd 
Sophie germain primes988th 
Twin primes (1st member)1025th 
Roman numberals  
Base 2100111101100000012100111101100001002
Base 3110101111023110101111123
Base 410331200141033120104
Base 5101001115101001145
Base 61424145614241526
Base 745565474556607
Base 823660182366048
Base 913344291334459
Base 1081281108128410
Base 1156082115608511
Base 123b055123b05812
Base 132acc5132acc813
Base 142189b14218a014
Base 151913b151913e15
Base 1613d811613d8416
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