Compare 1621 vs 1628

Property16211628
Typeprimecomposite number
Unique factors13
Total factors14
Prime factorization1621122 × 111 × 371
Prime factorization16212 × 2 × 11 × 37
Divisors count212
Divisors1, 16211, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628
Number of properties80
Chen primes163rd 
Harmonic primes89th 
Long primes101st 
Primes257th 
Pythagorean primes123rd 
Sexy primes (1st member)111th 
Super primes55th 
Twin primes (2nd member)52nd 
Roman numberalsMDCXXIMDCXXVIII
Base 2110010101012110010111002
Base 32020001320200223
Base 412111141211304
Base 5224415230035
Base 6113016113126
Base 74504745147
Base 83125831348
Base 92201922089
Base 10162110162810
Base 11124411125011
Base 12b3112b3812
Base 139791398313
Base 1483b1484414
Base 157311573815
Base 166551665c16
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