Compare 31 vs 56

Property3156
Typeprimecomposite number
Unique factors12
Total factors14
Prime factorization31123 × 71
Prime factorization312 × 2 × 2 × 7
Divisors count28
Divisors1, 311, 2, 4, 7, 8, 14, 28, 56
Number of properties180
Centered decagonal primes2nd 
Centered triangular primes2nd 
Chen primes11th 
Class 1+ primes8th 
Emirps3rd 
Euclid primes4th 
Happy primes5th 
Lucky primes4th 
Mersenne primes3rd 
Multiplicative primes7th 
Pierpont primes of the 2nd kind8th 
Primes11th 
Right-truncatable primes7th 
Sexy primes (1st member)7th 
Sexy prime triplets (1st member)5th 
Solinas primes10th 
Super primes5th 
Twin primes (2nd member)5th 
Roman numberalsXXXILVI
Base 21111121110002
Base 31011320023
Base 413343204
Base 511152115
Base 65161326
Base 74371107
Base 8378708
Base 9349629
Base 1031105610
Base 1129115111
Base 1227124812
Base 1325134413
Base 1423144014
Base 1521153b15
Base 161f163816
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