Compare 19 vs 19

Unique factors11
Total factors11
Prime factorization191191
Prime factorization1919
Divisors count22
Divisors1, 191, 19
Number of properties1818
Centered triangular primes1st1st
Chen primes8th8th
Cousin primes (1st member)4th4th
Cuban primes 12nd2nd
Happy primes3rd3rd
Long primes3rd3rd
Pierpont primes7th7th
Prime quadruplets (4th member)2nd2nd
Prime quintuplet 1s (5th member)1st1st
Prime quintuplet 2s (4th member)2nd2nd
Prime sextuplets (5th member)1st1st
Prime triplets (2nd member)5th5th
Prime triplets (3rd member)4th4th
Sexy primes (2nd member)4th4th
Sexy prime triplets (3rd member)2nd2nd
Solinas primes7th7th
Twin primes (2nd member)4th4th
Roman numberalsXIXXIX
Base 2100112100112
Base 320132013
Base 410341034
Base 5345345
Base 6316316
Base 7257257
Base 8238238
Base 9219219
Base 1019101910
Base 1118111811
Base 1217121712
Base 1316131613
Base 1415141514
Base 1514151415
Base 1613161316
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