Prime Numbers
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Numbers
Compare 5 vs 13
Compare 5 vs 13
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Property
5
13
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
5
1
13
1
Prime factorization
5
13
Divisors count
2
2
Divisors
1
,
5
1
,
13
Number of properties
36
32
Additive primes
3rd
Bell primes
2nd
Centered square primes
1st
2nd
Chen primes
3rd
6th
Class 1+ primes
3rd
Cousin primes
(1st member)
3rd
Cuban primes 2
1st
Dihedral primes
2nd
Emirps
1st
Factorial primes
3rd
Fermat primes
2nd
Fibonacci primes
3rd
4th
Good primes
1st
Happy primes
2nd
Harmonic primes
1st
2nd
Left-truncatable primes
3rd
5th
Lucky primes
3rd
Multiplicative primes
3rd
5th
Palindromic primes
3rd
Pierpont primes
3rd
5th
Pierpont primes of the 2nd kind
3rd
Primes
3rd
6th
Prime quadruplets
(1st member)
1st
Prime quadruplets
(2nd member)
2nd
Prime quadruplets
(4th member)
1st
Prime quintuplet 1s
(3rd member)
1st
Prime quintuplet 2s
(1st member)
1st
Prime quintuplet 2s
(2nd member)
2nd
Prime quintuplet 2s
(4th member)
1st
Prime sextuplets
(3rd member)
1st
Prime triplets
(1st member)
1st
4th
Prime triplets
(2nd member)
3rd
Prime triplets
(3rd member)
2nd
Proth primes
2nd
3rd
Pythagorean primes
1st
2nd
Restricted left-truncatable primes
2nd
Right-truncatable primes
3rd
Safe primes
1st
Sexy primes
(1st member)
1st
4th
Sexy primes
(2nd member)
2nd
Sexy prime quadrupletss
(1st member)
1st
Sexy prime triplets
(1st member)
1st
Sexy prime triplets
(2nd member)
2nd
Solinas primes
2nd
5th
Sophie germain primes
3rd
Super primes
2nd
Thabit primes
2nd
Thabit primes of the 2nd kind
2nd
Twin primes
(1st member)
2nd
Twin primes
(2nd member)
1st
3rd
Two-sided primes
3rd
Ulam primes
4th
Wilson primes
1st
2nd
Roman numberals
V
XIII
Base 2
101
2
1101
2
Base 3
12
3
111
3
Base 4
11
4
31
4
Base 5
10
5
23
5
Base 6
5
6
21
6
Base 7
5
7
16
7
Base 8
5
8
15
8
Base 9
5
9
14
9
Base 10
5
10
13
10
Base 11
5
11
12
11
Base 12
5
12
11
12
Base 13
5
13
10
13
Base 14
5
14
d
14
Base 15
5
15
d
15
Base 16
5
16
d
16
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