1. Numbers
  2. Compare 20399 vs 20405

Compare 20399 vs 20405

Property2039920405
Typeprimecomposite number
Unique factors14
Total factors14
Prime factorization20399151 × 71 × 111 × 531
Prime factorization203995 × 7 × 11 × 53
Divisors count216
Divisors1, 203991, 5, 7, 11, 35, 53, 55, 77, 265, 371, 385, 583, 1855, 2915, 4081, 20405
Number of properties60
Additive primes1071st 
Chen primes1133rd 
Isolated primes1614th 
Primes2305th 
Sexy primes (2nd member)705th 
Ulam primes169th 
Roman numberals  
Base 210011111010111121001111101101012
Base 31000222112310002222023
Base 4103322334103323114
Base 51123044511231105
Base 623423562342456
Base 711332171133307
Base 8476578476658
Base 9308759308829
Base 1020399102040510
Base 1114365111437011
Base 12b97b12b98512
Base 13939213939813
Base 14761114761714
Base 15609e1560a515
Base 164faf164fb516
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