1. Numbers
  2. Compare 281 vs 289

Compare 281 vs 289

Property281289
Typeprimesemiprime
Unique factors11
Total factors12
Prime factorization2811172
Prime factorization28117 × 17
Divisors count23
Divisors1, 2811, 17, 289
Number of properties101
Additive primes34th 
Centered decagonal primes7th 
Chen primes45th 
Cousin primes (2nd member)17th 
Harmonic primes23rd 
Primes60th 
Prime triplets (2nd member)17th 
Pythagorean primes28th 
Semiprimes 90th
Sophie germain primes19th 
Twin primes (1st member)19th 
Roman numberalsCCLXXXICCLXXXIX
Base 210001100121001000012
Base 310110231012013
Base 4101214102014
Base 52111521245
Base 61145612016
Base 755175627
Base 843184418
Base 934293519
Base 102811028910
Base 112361124311
Base 121b51220112
Base 131881319313
Base 141611416914
Base 1513b1514415
Base 161191612116
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