Prime Numbers
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Numbers
Compare 7 vs 13
Compare 7 vs 13
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vs
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Property
7
13
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
7
^{1}
13
^{1}
Prime factorization
7
13
Divisors count
2
2
Divisors
1
,
7
1
,
13
Number of properties
37
32
Additive primes
4th
Carol primes
1st
Centered square primes
2nd
Chen primes
4th
6th
Class 1+ primes
4th
Cousin primes
(1st member)
2nd
3rd
Cousin primes
(2nd member)
1st
Cuban primes 1
1st
Cuban primes 2
1st
Double mersenne primes
1st
Emirps
1st
Euclid primes
3rd
Factorial primes
4th
Fibonacci primes
4th
Happy primes
1st
2nd
Harmonic primes
2nd
Kynea primes
2nd
Left-truncatable primes
4th
5th
Long primes
1st
Lucas primes
3rd
Lucky primes
2nd
3rd
Mersenne primes
2nd
Multiplicative primes
4th
5th
Palindromic primes
4th
Pierpont primes
4th
5th
Pierpont primes of the 2nd kind
4th
Primes
4th
6th
Prime quadruplets
(2nd member)
1st
2nd
Prime quadruplets
(4th member)
1st
Prime quintuplet 1s
(1st member)
1st
Prime quintuplet 1s
(3rd member)
1st
Prime quintuplet 2s
(2nd member)
1st
2nd
Prime quintuplet 2s
(4th member)
1st
Prime sextuplets
(1st member)
1st
Prime sextuplets
(3rd member)
1st
Prime triplets
(1st member)
2nd
4th
Prime triplets
(2nd member)
1st
3rd
Prime triplets
(3rd member)
2nd
Proth primes
3rd
Pythagorean primes
2nd
Right-truncatable primes
4th
Safe primes
2nd
Sexy primes
(1st member)
2nd
4th
Sexy primes
(2nd member)
2nd
Sexy prime triplets
(1st member)
2nd
Sexy prime triplets
(2nd member)
2nd
Solinas primes
3rd
5th
Thabit primes of the 2nd kind
1st
2nd
Twin primes
(2nd member)
2nd
3rd
Two-sided primes
4th
Ulam primes
4th
Wilson primes
2nd
Woodall primes
1st
Roman numberals
VII
XIII
Base 2
111
_{2}
1101
_{2}
Base 3
21
_{3}
111
_{3}
Base 4
13
_{4}
31
_{4}
Base 5
12
_{5}
23
_{5}
Base 6
11
_{6}
21
_{6}
Base 7
10
_{7}
16
_{7}
Base 8
7
_{8}
15
_{8}
Base 9
7
_{9}
14
_{9}
Base 10
7
_{10}
13
_{10}
Base 11
7
_{11}
12
_{11}
Base 12
7
_{12}
11
_{12}
Base 13
7
_{13}
10
_{13}
Base 14
7
_{14}
d
_{14}
Base 15
7
_{15}
d
_{15}
Base 16
7
_{16}
d
_{16}
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