1. Numbers
  2. Compare 821 vs 1213

Compare 821 vs 1213

Property8211213
Typeprimeprime
Unique factors11
Total factors11
Prime factorization821112131
Prime factorization8211213
Divisors count22
Divisors1, 8211, 1213
Number of properties107
Additive primes75th106th
Chen primes97th 
Cousin primes (1st member) 45th
Emirps 52nd
Good primes40th49th
Isolated primes 117th
Long primes50th 
Primes142nd198th
Prime quadruplets (1st member)5th 
Prime triplets (1st member)25th 
Pythagorean primes69th97th
Sexy primes (1st member)64th 
Twin primes (1st member)32nd 
Roman numberalsDCCCXXIMCCXIII
Base 211001101012100101111012
Base 31010102311222213
Base 43031141023314
Base 5112415143235
Base 63445653416
Base 72252733527
Base 81465822758
Base 91112915879
Base 1082110121310
Base 1168711a0311
Base 125851285112
Base 134b21372413
Base 144291462914
Base 1539b1555d15
Base 16335164bd16
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