1. Numbers
  2. Compare 19913 vs 19921

Compare 19913 vs 19921

Property1991319921
Typeprimesemiprime
Unique factors12
Total factors12
Prime factorization199131111 × 18111
Prime factorization1991311 × 1811
Divisors count24
Divisors1, 199131, 11, 1811, 19921
Number of properties101
Additive primes1045th 
Emirps626th 
Good primes256th 
Isolated primes1572nd 
Long primes861st 
Primes2251st 
Pythagorean primes1119th 
Semiprimes 5067th
Sexy primes (1st member)691st 
Sophie germain primes324th 
Super primes335th 
Roman numberals  
Base 210011011100100121001101110100012
Base 31000022112310000222113
Base 4103130214103131014
Base 51114123511141415
Base 623210562321216
Base 711202571120367
Base 8467118467218
Base 9302759302849
Base 1019913101992110
Base 1113a631113a7011
Base 12b63512b64112
Base 1390aa1390b513
Base 14738514738d14
Base 155d78155d8115
Base 164dc9164dd116
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