Compare 31 vs 109

Unique factors11
Total factors11
Prime factorization3111091
Prime factorization31109
Divisors count22
Divisors1, 311, 109
Number of properties1819
Centered decagonal primes2nd 
Centered triangular primes2nd3rd
Chen primes11th23rd
Class 1+ primes8th 
Cousin primes (1st member) 11th
Cuban primes 2 2nd
Euclid primes4th 
Happy primes5th9th
Long primes 10th
Lucky primes4th 
Mersenne primes3rd 
Multiplicative primes7th 
Pierpont primes 11th
Pierpont primes of the 2nd kind8th 
Prime quadruplets (4th member) 3rd
Prime quintuplet 1s (5th member) 2nd
Prime quintuplet 2s (4th member) 3rd
Prime sextuplets (5th member) 2nd
Prime triplets (2nd member) 12th
Prime triplets (3rd member) 11th
Pythagorean primes 13th
Right-truncatable primes7th 
Sexy primes (1st member)7th 
Sexy primes (2nd member) 18th
Sexy prime triplets (1st member)5th 
Sexy prime triplets (3rd member) 10th
Solinas primes10th 
Super primes5th10th
Twin primes (2nd member)5th10th
Roman numberalsXXXICIX
Base 211111211011012
Base 310113110013
Base 4133412314
Base 511154145
Base 65163016
Base 74372147
Base 83781558
Base 93491319
Base 10311010910
Base 1129119a11
Base 1227129112
Base 1325138513
Base 1423147b14
Base 1521157415
Base 161f166d16
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