1. Numbers
  2. Compare 11 vs 20

Compare 11 vs 20

Property1120
Typeprimecomposite number
Unique factors12
Total factors13
Prime factorization11122 × 51
Prime factorization112 × 2 × 5
Divisors count26
Divisors1, 111, 2, 4, 5, 10, 20
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 
Primes5th 
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 numberalsXIXX
Base 210112101002
Base 310232023
Base 42341104
Base 5215405
Base 6156326
Base 7147267
Base 8138248
Base 9129229
Base 1011102010
Base 1110111911
Base 12b121812
Base 13b131713
Base 14b141614
Base 15b151515
Base 16b161416
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