Compare 131 vs 151

Unique factors11
Total factors11
Prime factorization13111511
Prime factorization131151
Divisors count22
Divisors1, 1311, 151
Number of properties129
Additive primes17th20th
Centered decagonal primes 5th
Chen primes26th 
Cousin primes (2nd member)12th 
Isolated primes13th 
Long primes12th 
Lucky primes 11th
Multiplicative primes10th11th
Palindromic primes7th8th
Sexy primes (1st member)20th21st
Sexy prime triplets (1st member) 12th
Solinas primes23rd 
Sophie germain primes12th 
Twin primes (2nd member) 12th
Ulam primes8th 
Roman numberalsCXXXICLI
Base 2100000112100101112
Base 3112123121213
Base 42003421134
Base 51011511015
Base 633564116
Base 724573047
Base 820382278
Base 915591779
Base 101311015110
Base 1110a1112811
Base 12ab1210712
Base 13a113b813
Base 149514ab14
Base 158b15a115
Base 1683169716
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