1. Numbers
  2. Compare 21821 vs 21828

Compare 21821 vs 21828

Property2182121828
Typeprimecomposite number
Unique factors14
Total factors15
Prime factorization21821122 × 31 × 171 × 1071
Prime factorization218212 × 2 × 3 × 17 × 107
Divisors count224
Divisors1, 218211, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 107, 204, 214, 321, 428, 642, 1284, 1819, 3638, 5457, 7276, 10914, 21828
Number of properties60
Chen primes1201st 
Cousin primes (2nd member)372nd 
Isolated primes1707th 
Long primes926th 
Primes2448th 
Pythagorean primes1215th 
Roman numberals  
Base 210101010011110121010101010001002
Base 31002221012310022211103
Base 4111103314111110104
Base 51144241511443035
Base 624500562450206
Base 712042271204327
Base 8524758525048
Base 9328359328439
Base 1021821102182810
Base 1115438111544411
Base 1210765121077012
Base 139c17139c2113
Base 147d49147d5214
Base 1566eb15670315
Base 16553d16554416
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