1. Numbers
  2. Compare 51 vs 61

Compare 51 vs 61

Property5161
Typesemiprimeprime
Unique factors21
Total factors21
Prime factorization31 × 171611
Prime factorization3 × 1761
Divisors count42
Divisors1, 3, 17, 511, 61
Number of properties112
Additive primes 11th
Centered decagonal primes 3rd
Centered square primes 4th
Cuban primes 1 4th
Long primes 8th
Primes 18th
Pythagorean primes 8th
Semiprimes18th 
Sexy primes (1st member) 12th
Sexy prime quadrupletss (1st member) 4th
Sexy prime triplets (1st member) 8th
Solinas primes 15th
Twin primes (2nd member) 7th
Roman numberalsLILXI
Base 211001121111012
Base 31220320213
Base 430343314
Base 520152215
Base 612361416
Base 710271157
Base 8638758
Base 9569679
Base 1051106110
Base 1147115611
Base 1243125112
Base 133c134913
Base 1439144514
Base 1536154115
Base 1633163d16
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