Prime Numbers
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Numbers
Compare 19 vs 23
Compare 19 vs 23
Compare
vs
Compare
Property
19
23
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
19
^{1}
23
^{1}
Prime factorization
19
23
Divisors count
2
2
Divisors
1
,
19
1
,
23
Number of properties
18
30
Additive primes
6th
Centered triangular primes
1st
Chen primes
8th
9th
Class 1+ primes
7th
Cousin primes
(1st member)
4th
Cousin primes
(2nd member)
4th
Cuban primes 1
2nd
Factorial primes
5th
Happy primes
3rd
4th
Harmonic primes
4th
Isolated primes
2nd
Kynea primes
3rd
Left-truncatable primes
7th
Long primes
3rd
4th
Pierpont primes
7th
Pierpont primes of the 2nd kind
7th
Primes
8th
9th
Prime quadruplets
(4th member)
2nd
Prime quintuplet 1s
(5th member)
1st
Prime quintuplet 2s
(4th member)
2nd
Prime quintuplet 2s
(5th member)
2nd
Prime sextuplets
(5th member)
1st
Prime sextuplets
(6th member)
1st
Prime triplets
(2nd member)
5th
Prime triplets
(3rd member)
4th
5th
Right-truncatable primes
5th
Safe primes
4th
Sexy primes
(1st member)
6th
Sexy primes
(2nd member)
4th
5th
Sexy prime quadrupletss
(3rd member)
2nd
Sexy prime quadrupletss
(4th member)
1st
Sexy prime triplets
(2nd member)
4th
Sexy prime triplets
(3rd member)
2nd
3rd
Solinas primes
7th
8th
Sophie germain primes
5th
Thabit primes
4th
Twin primes
(2nd member)
4th
Two-sided primes
5th
Wedderburn-etherington primes
4th
Woodall primes
2nd
Roman numberals
XIX
XXIII
Base 2
10011
_{2}
10111
_{2}
Base 3
201
_{3}
212
_{3}
Base 4
103
_{4}
113
_{4}
Base 5
34
_{5}
43
_{5}
Base 6
31
_{6}
35
_{6}
Base 7
25
_{7}
32
_{7}
Base 8
23
_{8}
27
_{8}
Base 9
21
_{9}
25
_{9}
Base 10
19
_{10}
23
_{10}
Base 11
18
_{11}
21
_{11}
Base 12
17
_{12}
1b
_{12}
Base 13
16
_{13}
1a
_{13}
Base 14
15
_{14}
19
_{14}
Base 15
14
_{15}
18
_{15}
Base 16
13
_{16}
17
_{16}
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