1. Numbers
  2. Compare 11 vs 51

Compare 11 vs 51

Property1151
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization11131 × 171
Prime factorization113 × 17
Divisors count24
Divisors1, 111, 3, 17, 51
Number of properties361
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 
Semiprimes 18th
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 numberalsXILI
Base 2101121100112
Base 3102312203
Base 42343034
Base 52152015
Base 61561236
Base 71471027
Base 8138638
Base 9129569
Base 1011105110
Base 1110114711
Base 12b124312
Base 13b133c13
Base 14b143914
Base 15b153615
Base 16b163316
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