1. Numbers
  2. Compare 251 vs 255

Compare 251 vs 255

Property251255
Typeprimecomposite number
Unique factors13
Total factors13
Prime factorization251131 × 51 × 171
Prime factorization2513 × 5 × 17
Divisors count28
Divisors1, 2511, 3, 5, 15, 17, 51, 85, 255
Number of properties100
Chen primes41st 
Good primes19th 
Harmonic primes20th 
Isolated primes21st 
Primes54th 
Sexy primes (1st member)30th 
Sexy prime quadrupletss (1st member)5th 
Sexy prime triplets (1st member)15th 
Solinas primes30th 
Sophie germain primes18th 
Roman numberalsCCLICCLV
Base 2111110112111111112
Base 310002231001103
Base 43323433334
Base 52001520105
Base 61055611036
Base 750675137
Base 837383778
Base 930893139
Base 102511025510
Base 112091121211
Base 1218b1219312
Base 131641316813
Base 1413d1414314
Base 1511b1512015
Base 16fb16ff16
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