Prime Numbers
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Numbers
Compare 9 vs 23
Compare 9 vs 23
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vs
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Property
9
23
Type
semiprime
prime
Unique factors
1
1
Total factors
2
1
Prime factorization
3
2
23
1
Prime factorization
3
×
3
23
Divisors count
3
2
Divisors
1
,
3
,
9
1
,
23
Number of properties
1
30
Additive primes
6th
Chen primes
9th
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
Long primes
4th
Pierpont primes of the 2nd kind
7th
Primes
9th
Prime quintuplet 2s
(5th member)
2nd
Prime sextuplets
(6th member)
1st
Prime triplets
(3rd member)
5th
Right-truncatable primes
5th
Safe primes
4th
Semiprimes
3rd
Sexy primes
(1st member)
6th
Sexy primes
(2nd member)
5th
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
Sophie germain primes
5th
Thabit primes
4th
Two-sided primes
5th
Wedderburn-etherington primes
4th
Woodall primes
2nd
Roman numberals
IX
XXIII
Base 2
1001
2
10111
2
Base 3
100
3
212
3
Base 4
21
4
113
4
Base 5
14
5
43
5
Base 6
13
6
35
6
Base 7
12
7
32
7
Base 8
11
8
27
8
Base 9
10
9
25
9
Base 10
9
10
23
10
Base 11
9
11
21
11
Base 12
9
12
1b
12
Base 13
9
13
1a
13
Base 14
9
14
19
14
Base 15
9
15
18
15
Base 16
9
16
17
16
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