1. Numbers
  2. Compare 281 vs 285

Compare 281 vs 285

Property281285
Typeprimecomposite number
Unique factors13
Total factors13
Prime factorization281131 × 51 × 191
Prime factorization2813 × 5 × 19
Divisors count28
Divisors1, 2811, 3, 5, 15, 19, 57, 95, 285
Number of properties100
Additive primes34th 
Centered decagonal primes7th 
Chen primes45th 
Cousin primes (2nd member)17th 
Harmonic primes23rd 
Primes60th 
Prime triplets (2nd member)17th 
Pythagorean primes28th 
Sophie germain primes19th 
Twin primes (1st member)19th 
Roman numberalsCCLXXXICCLXXXV
Base 210001100121000111012
Base 310110231011203
Base 4101214101314
Base 52111521205
Base 61145611536
Base 755175557
Base 843184358
Base 934293469
Base 102811028510
Base 112361123a11
Base 121b5121b912
Base 131881318c13
Base 141611416514
Base 1513b1514015
Base 161191611d16
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