1. Numbers
  2. Compare 821 vs 828

Compare 821 vs 828

Property821828
Typeprimecomposite number
Unique factors13
Total factors15
Prime factorization821122 × 32 × 231
Prime factorization8212 × 2 × 3 × 3 × 23
Divisors count218
Divisors1, 8211, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 828
Number of properties100
Additive primes75th 
Chen primes97th 
Good primes40th 
Long primes50th 
Primes142nd 
Prime quadruplets (1st member)5th 
Prime triplets (1st member)25th 
Pythagorean primes69th 
Sexy primes (1st member)64th 
Twin primes (1st member)32nd 
Roman numberalsDCCCXXIDCCCXXVIII
Base 21100110101211001111002
Base 31010102310102003
Base 4303114303304
Base 5112415113035
Base 63445635006
Base 72252722627
Base 81465814748
Base 91112911209
Base 108211082810
Base 116871169311
Base 125851259012
Base 134b2134b913
Base 144291443214
Base 1539b153a315
Base 163351633c16
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