1. Numbers
  2. Compare 17 vs 18

Compare 17 vs 18

Property1718
Typeprimecomposite number
Unique factors12
Total factors13
Prime factorization17121 × 32
Prime factorization172 × 3 × 3
Divisors count26
Divisors1, 171, 2, 3, 6, 9, 18
Number of properties360
Chen primes7th 
Class 1+ primes6th 
Cousin primes (2nd member)3rd 
Emirps2nd 
Fermat primes3rd 
Genocchi primes1st 
Good primes3rd 
Harmonic primes3rd 
Left-truncatable primes6th 
Leyland primes2nd 
Long primes2nd 
Multiplicative primes6th 
Pierpont primes6th 
Pierpont primes of the 2nd kind6th 
Primes7th 
Prime quadruplets (3rd member)2nd 
Prime quintuplet 1s (4th member)1st 
Prime quintuplet 2s (3rd member)2nd 
Prime quintuplet 2s (5th member)1st 
Prime sextuplets (4th member)1st 
Prime triplets (1st member)5th 
Prime triplets (2nd member)4th 
Prime triplets (3rd member)3rd 
Proth primes4th 
Pythagorean primes3rd 
Quartan primes2nd 
Sexy primes (1st member)5th 
Sexy primes (2nd member)3rd 
Sexy prime quadrupletss (2nd member)2nd 
Sexy prime quadrupletss (3rd member)1st 
Sexy prime triplets (1st member)4th 
Sexy prime triplets (2nd member)3rd 
Sexy prime triplets (3rd member)1st 
Solinas primes6th 
Super primes4th 
Twin primes (1st member)4th 
Roman numberalsXVIIXVIII
Base 2100012100102
Base 312232003
Base 410141024
Base 5325335
Base 6256306
Base 7237247
Base 8218228
Base 9189209
Base 1017101810
Base 1116111711
Base 1215121612
Base 1314131513
Base 1413141414
Base 1512151315
Base 1611161216
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