Compare 19 vs 61

Unique factors11
Total factors11
Prime factorization191611
Prime factorization1961
Divisors count22
Divisors1, 191, 61
Number of properties1812
Additive primes 11th
Centered decagonal primes 3rd
Centered square primes 4th
Centered triangular primes1st 
Chen primes8th 
Cousin primes (1st member)4th 
Cuban primes 12nd4th
Happy primes3rd 
Long primes3rd8th
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 
Pythagorean primes 8th
Sexy primes (1st member) 12th
Sexy primes (2nd member)4th 
Sexy prime quadrupletss (1st member) 4th
Sexy prime triplets (1st member) 8th
Sexy prime triplets (3rd member)2nd 
Solinas primes7th15th
Twin primes (2nd member)4th7th
Roman numberalsXIXLXI
Base 21001121111012
Base 3201320213
Base 410343314
Base 53452215
Base 63161416
Base 72571157
Base 8238758
Base 9219679
Base 1019106110
Base 1118115611
Base 1217125112
Base 1316134913
Base 1415144514
Base 1514154115
Base 1613163d16
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