Prime Numbers
Go
Numbers
Compare 8 vs 13
Compare 8 vs 13
Compare
vs
Compare
Property
8
13
Type
composite number
prime
Unique factors
1
1
Total factors
3
1
Prime factorization
2
3
13
1
Prime factorization
2
×
2
×
2
13
Divisors count
4
2
Divisors
1
,
2
,
4
,
8
1
,
13
Number of properties
0
32
Centered square primes
2nd
Chen primes
6th
Cousin primes
(1st member)
3rd
Cuban primes 2
1st
Emirps
1st
Fibonacci primes
4th
Happy primes
2nd
Harmonic primes
2nd
Left-truncatable primes
5th
Lucky primes
3rd
Multiplicative primes
5th
Pierpont primes
5th
Primes
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
Sexy primes
(1st member)
4th
Sexy primes
(2nd member)
2nd
Sexy prime triplets
(2nd member)
2nd
Solinas primes
5th
Thabit primes of the 2nd kind
2nd
Twin primes
(2nd member)
3rd
Ulam primes
4th
Wilson primes
2nd
Roman numberals
VIII
XIII
Base 2
1000
2
1101
2
Base 3
22
3
111
3
Base 4
20
4
31
4
Base 5
13
5
23
5
Base 6
12
6
21
6
Base 7
11
7
16
7
Base 8
10
8
15
8
Base 9
8
9
14
9
Base 10
8
10
13
10
Base 11
8
11
12
11
Base 12
8
12
11
12
Base 13
8
13
10
13
Base 14
8
14
d
14
Base 15
8
15
d
15
Base 16
8
16
d
16
This website uses cookies to ensure you get the best experience on our website.
More info
OK