Compare 19 vs 51

Unique factors12
Total factors12
Prime factorization19131 × 171
Prime factorization193 × 17
Divisors count24
Divisors1, 191, 3, 17, 51
Number of properties181
Centered triangular primes1st 
Chen primes8th 
Cousin primes (1st member)4th 
Cuban primes 12nd 
Happy primes3rd 
Long primes3rd 
Pierpont primes7th 
Prime quadruplets (4th member)2nd 
Prime quintuplet 1s (5th member)1st 
Prime quintuplet 2s (4th member)2nd 
Prime sextuplets (5th member)1st 
Prime triplets (2nd member)5th 
Prime triplets (3rd member)4th 
Semiprimes 18th
Sexy primes (2nd member)4th 
Sexy prime triplets (3rd member)2nd 
Solinas primes7th 
Twin primes (2nd member)4th 
Roman numberalsXIXLI
Base 21001121100112
Base 3201312203
Base 410343034
Base 53452015
Base 63161236
Base 72571027
Base 8238638
Base 9219569
Base 1019105110
Base 1118114711
Base 1217124312
Base 1316133c13
Base 1415143914
Base 1514153615
Base 1613163316
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