1. Numbers
  2. Compare 1811 vs 1812

Compare 1811 vs 1812

Property18111812
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization1811122 × 31 × 1511
Prime factorization18112 × 2 × 3 × 151
Divisors count212
Divisors1, 18111, 2, 3, 4, 6, 12, 151, 302, 453, 604, 906, 1812
Number of properties80
Additive primes149th 
Dihedral primes7th 
Emirps87th 
Harmonic primes100th 
Isolated primes169th 
Long primes109th 
Primes280th 
Sophie germain primes56th 
Roman numberalsMDCCCXIMDCCCXII
Base 2111000100112111000101002
Base 32111002321110103
Base 413010341301104
Base 5242215242225
Base 6122156122206
Base 75165751667
Base 83423834248
Base 92432924339
Base 10181110181210
Base 1113a71113a811
Base 12106b12107012
Base 13a9413a9513
Base 149351493614
Base 1580b1580c15
Base 167131671416
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