Compare 11 vs 40

Typeprimecomposite number
Unique factors12
Total factors14
Prime factorization11123 × 51
Prime factorization112 × 2 × 2 × 5
Divisors count28
Divisors1, 111, 2, 4, 5, 8, 10, 20, 40
Number of properties360
Additive primes5th 
Centered decagonal primes1st 
Chen primes5th 
Class 1+ primes5th 
Cousin primes (2nd member)2nd 
Dihedral primes3rd 
Good primes2nd 
Lucas primes4th 
Mills primes2nd 
Palindromic primes5th 
Pierpont primes of the 2nd kind5th 
Prime quadruplets (1st member)2nd 
Prime quadruplets (3rd member)1st 
Prime quintuplet 1s (2nd member)1st 
Prime quintuplet 2s (1st member)2nd 
Prime quintuplet 2s (3rd member)1st 
Prime sextuplets (2nd member)1st 
Prime triplets (1st member)3rd 
Prime triplets (2nd member)2nd 
Prime triplets (3rd member)1st 
Safe primes3rd 
Sexy primes (1st member)3rd 
Sexy primes (2nd member)1st 
Sexy prime quadrupletss (1st member)2nd 
Sexy prime quadrupletss (2nd member)1st 
Sexy prime triplets (1st member)3rd 
Sexy prime triplets (2nd member)1st 
Solinas primes4th 
Sophie germain primes4th 
Super primes3rd 
Thabit primes3rd 
Twin primes (1st member)3rd 
Ulam primes3rd 
Wagstaff primes2nd 
Wedderburn-etherington primes3rd 
Roman numberalsXIXL
Base 2101121010002
Base 3102311113
Base 42342204
Base 52151305
Base 61561046
Base 7147557
Base 8138508
Base 9129449
Base 1011104010
Base 1110113711
Base 12b123412
Base 13b133113
Base 14b142c14
Base 15b152a15
Base 16b162816
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