Compare 1801 vs 1812

Property18011812
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization1801122 × 31 × 1511
Prime factorization18012 × 2 × 3 × 151
Divisors count212
Divisors1, 18011, 2, 3, 4, 6, 12, 151, 302, 453, 604, 906, 1812
Number of properties70
Chen primes174th 
Cuban primes 113th 
Harmonic primes99th 
Isolated primes168th 
Lucky primes66th 
Primes279th 
Pythagorean primes136th 
Roman numberalsMDCCCIMDCCCXII
Base 2111000010012111000101002
Base 32110201321110103
Base 413002141301104
Base 5242015242225
Base 6122016122206
Base 75152751667
Base 83411834248
Base 92421924339
Base 10180110181210
Base 1113981113a811
Base 12106112107012
Base 13a8713a9513
Base 149291493614
Base 158011580c15
Base 167091671416
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