Prime Numbers
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Numbers
Compare 23 vs 137
Compare 23 vs 137
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Property
23
137
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
23
1
137
1
Prime factorization
23
137
Divisors count
2
2
Divisors
1
,
23
1
,
137
Number of properties
30
8
Additive primes
6th
18th
Chen primes
9th
27th
Class 1+ primes
7th
Cousin primes
(2nd member)
4th
Factorial primes
5th
Happy primes
4th
Harmonic primes
4th
Isolated primes
2nd
Kynea primes
3rd
Left-truncatable primes
7th
17th
Long primes
4th
Pierpont primes of the 2nd kind
7th
Primes
9th
33rd
Prime quintuplet 2s
(5th member)
2nd
Prime sextuplets
(6th member)
1st
Prime triplets
(3rd member)
5th
Pythagorean primes
15th
Right-truncatable primes
5th
Safe primes
4th
Sexy primes
(1st member)
6th
Sexy primes
(2nd member)
5th
20th
Sexy prime quadrupletss
(3rd member)
2nd
Sexy prime quadrupletss
(4th member)
1st
Sexy prime triplets
(2nd member)
4th
Sexy prime triplets
(3rd member)
3rd
Solinas primes
8th
24th
Sophie germain primes
5th
Thabit primes
4th
Twin primes
(1st member)
11th
Two-sided primes
5th
Wedderburn-etherington primes
4th
Woodall primes
2nd
Roman numberals
XXIII
CXXXVII
Base 2
10111
2
10001001
2
Base 3
212
3
12002
3
Base 4
113
4
2021
4
Base 5
43
5
1022
5
Base 6
35
6
345
6
Base 7
32
7
254
7
Base 8
27
8
211
8
Base 9
25
9
162
9
Base 10
23
10
137
10
Base 11
21
11
115
11
Base 12
1b
12
b5
12
Base 13
1a
13
a7
13
Base 14
19
14
9b
14
Base 15
18
15
92
15
Base 16
17
16
89
16
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