Prime Numbers
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Numbers
Compare 5 vs 19
Compare 5 vs 19
Compare
vs
Compare
Property
5
19
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
5
1
19
1
Prime factorization
5
19
Divisors count
2
2
Divisors
1
,
5
1
,
19
Number of properties
36
18
Additive primes
3rd
Bell primes
2nd
Centered square primes
1st
Centered triangular primes
1st
Chen primes
3rd
8th
Class 1+ primes
3rd
Cousin primes
(1st member)
4th
Cuban primes 1
2nd
Dihedral primes
2nd
Factorial primes
3rd
Fermat primes
2nd
Fibonacci primes
3rd
Good primes
1st
Happy primes
3rd
Harmonic primes
1st
Left-truncatable primes
3rd
Long primes
3rd
Multiplicative primes
3rd
Palindromic primes
3rd
Pierpont primes
3rd
7th
Pierpont primes of the 2nd kind
3rd
Primes
3rd
8th
Prime quadruplets
(1st member)
1st
Prime quadruplets
(4th member)
2nd
Prime quintuplet 1s
(5th member)
1st
Prime quintuplet 2s
(1st member)
1st
Prime quintuplet 2s
(4th member)
2nd
Prime sextuplets
(5th member)
1st
Prime triplets
(1st member)
1st
Prime triplets
(2nd member)
5th
Prime triplets
(3rd member)
4th
Proth primes
2nd
Pythagorean primes
1st
Restricted left-truncatable primes
2nd
Right-truncatable primes
3rd
Safe primes
1st
Sexy primes
(1st member)
1st
Sexy primes
(2nd member)
4th
Sexy prime quadrupletss
(1st member)
1st
Sexy prime triplets
(1st member)
1st
Sexy prime triplets
(3rd member)
2nd
Solinas primes
2nd
7th
Sophie germain primes
3rd
Super primes
2nd
Thabit primes
2nd
Twin primes
(1st member)
2nd
Twin primes
(2nd member)
1st
4th
Two-sided primes
3rd
Wilson primes
1st
Roman numberals
V
XIX
Base 2
101
2
10011
2
Base 3
12
3
201
3
Base 4
11
4
103
4
Base 5
10
5
34
5
Base 6
5
6
31
6
Base 7
5
7
25
7
Base 8
5
8
23
8
Base 9
5
9
21
9
Base 10
5
10
19
10
Base 11
5
11
18
11
Base 12
5
12
17
12
Base 13
5
13
16
13
Base 14
5
14
15
14
Base 15
5
15
14
15
Base 16
5
16
13
16
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