Prime Numbers
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Numbers
Compare 2 vs 13
Compare 2 vs 13
Compare
vs
Compare
Property
2
13
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
2
^{1}
13
^{1}
Prime factorization
2
13
Divisors count
2
2
Divisors
1
,
2
1
,
13
Number of properties
26
32
Additive primes
1st
Bell primes
1st
Centered square primes
2nd
Chen primes
1st
6th
Class 1+ primes
1st
Cousin primes
(1st member)
3rd
Cuban primes 2
1st
Dihedral primes
1st
Emirps
1st
Euclid primes
1st
Factorial primes
1st
Fibonacci primes
1st
4th
Happy primes
2nd
Harmonic primes
2nd
Isolated primes
1st
Kynea primes
1st
Left-truncatable primes
1st
5th
Lucas primes
1st
Lucky primes
3rd
Mills primes
1st
Multiplicative primes
1st
5th
Palindromic primes
1st
Pierpont primes
1st
5th
Pierpont primes of the 2nd kind
1st
Primes
1st
6th
Prime quadruplets
(2nd member)
2nd
Prime quadruplets
(4th member)
1st
Prime quintuplet 1s
(3rd member)
1st
Prime quintuplet 2s
(2nd member)
2nd
Prime quintuplet 2s
(4th member)
1st
Prime sextuplets
(3rd member)
1st
Prime triplets
(1st member)
4th
Prime triplets
(2nd member)
3rd
Prime triplets
(3rd member)
2nd
Proth primes
3rd
Pythagorean primes
2nd
Quartan primes
1st
Restricted left-truncatable primes
1st
Right-truncatable primes
1st
Sexy primes
(1st member)
4th
Sexy primes
(2nd member)
2nd
Sexy prime triplets
(2nd member)
2nd
Solinas primes
5th
Sophie germain primes
1st
Thabit primes
1st
Thabit primes of the 2nd kind
2nd
Twin primes
(2nd member)
3rd
Two-sided primes
1st
Ulam primes
1st
4th
Wedderburn-etherington primes
1st
Wilson primes
2nd
Roman numberals
II
XIII
Base 2
10
_{2}
1101
_{2}
Base 3
2
_{3}
111
_{3}
Base 4
2
_{4}
31
_{4}
Base 5
2
_{5}
23
_{5}
Base 6
2
_{6}
21
_{6}
Base 7
2
_{7}
16
_{7}
Base 8
2
_{8}
15
_{8}
Base 9
2
_{9}
14
_{9}
Base 10
2
_{10}
13
_{10}
Base 11
2
_{11}
12
_{11}
Base 12
2
_{12}
11
_{12}
Base 13
2
_{13}
10
_{13}
Base 14
2
_{14}
d
_{14}
Base 15
2
_{15}
d
_{15}
Base 16
2
_{16}
d
_{16}
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