1. Numbers
  2. Compare 18121 vs 19421

Compare 18121 vs 19421

Property1812119421
Typeprimeprime
Unique factors11
Total factors11
Prime factorization181211194211
Prime factorization1812119421
Divisors count22
Divisors1, 181211, 19421
Number of properties718
Additive primes975th1021st
Chen primes 1088th
Cousin primes (2nd member) 340th
Emirps 605th
Good primes 254th
Happy primes 371st
Harmonic primes751st 
Long primes 838th
Primes2076th2199th
Prime quadruplets (1st member) 19th
Prime quintuplet 1s (2nd member) 8th
Prime quintuplet 2s (1st member) 6th
Prime sextuplets (2nd member) 4th
Prime triplets (1st member) 165th
Prime triplets (2nd member) 164th
Pythagorean primes1025th1091st
Sexy primes (1st member)640th672nd
Sexy prime triplets (1st member)178th185th
Twin primes (1st member) 333rd
Twin primes (2nd member)319th 
Roman numberals  
Base 210001101100100121001011110111012
Base 322021201132221220223
Base 4101230214102331314
Base 51034441511101415
Base 621552162255256
Base 710355571104237
Base 8433118457358
Base 9267649285689
Base 1018121101942110
Base 1112684111365611
Base 12a5a112b2a512
Base 13832c138abc13
Base 14686514711314
Base 155581155b4b15
Base 1646c9164bdd16
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