1. Numbers
  2. Compare 821 vs 830

Compare 821 vs 830

Property821830
Typeprimecomposite number
Unique factors13
Total factors13
Prime factorization821121 × 51 × 831
Prime factorization8212 × 5 × 83
Divisors count28
Divisors1, 8211, 2, 5, 10, 83, 166, 415, 830
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 numberalsDCCCXXIDCCCXXX
Base 21100110101211001111102
Base 31010102310102023
Base 4303114303324
Base 5112415113105
Base 63445635026
Base 72252722647
Base 81465814768
Base 91112911229
Base 108211083010
Base 116871169511
Base 125851259212
Base 134b2134bb13
Base 144291443414
Base 1539b153a515
Base 163351633e16
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