1. Numbers
  2. Compare 251 vs 258

Compare 251 vs 258

Property251258
Typeprimecomposite number
Unique factors13
Total factors13
Prime factorization251121 × 31 × 431
Prime factorization2512 × 3 × 43
Divisors count28
Divisors1, 2511, 2, 3, 6, 43, 86, 129, 258
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 numberalsCCLICCLVIII
Base 21111101121000000102
Base 310002231001203
Base 433234100024
Base 52001520135
Base 61055611106
Base 750675167
Base 837384028
Base 930893169
Base 102511025810
Base 112091121511
Base 1218b1219612
Base 131641316b13
Base 1413d1414614
Base 1511b1512315
Base 16fb1610216
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