1. Numbers
  2. Compare 19891 vs 19900

Compare 19891 vs 19900

Property1989119900
Typeprimecomposite number
Unique factors13
Total factors15
Prime factorization19891122 × 52 × 1991
Prime factorization198912 × 2 × 5 × 5 × 199
Divisors count218
Divisors1, 198911, 2, 4, 5, 10, 20, 25, 50, 100, 199, 398, 796, 995, 1990, 3980, 4975, 9950, 19900
Number of properties40
Harmonic primes815th 
Palindromic primes45th 
Primes2250th 
Twin primes (2nd member)340th 
Roman numberals  
Base 210011011011001121001101101111002
Base 31000021201310000220013
Base 4103123034103123304
Base 51114031511141005
Base 623203162320446
Base 711166471120067
Base 8466638466748
Base 9302519302619
Base 1019891101990010
Base 1113a431113a5111
Base 12b61712b62412
Base 13909113909a13
Base 14736b14737614
Base 155d61155d6a15
Base 164db3164dbc16
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