Prime Numbers
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Numbers
Compare 23 vs 191
Compare 23 vs 191
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vs
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Property
23
191
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
23
^{1}
191
^{1}
Prime factorization
23
191
Divisors count
2
2
Divisors
1
,
23
1
,
191
Number of properties
30
16
Additive primes
6th
24th
Chen primes
9th
34th
Class 1+ primes
7th
14th
Cousin primes
(2nd member)
4th
Factorial primes
5th
Good primes
16th
Happy primes
4th
Harmonic primes
4th
15th
Isolated primes
2nd
Kynea primes
3rd
Left-truncatable primes
7th
Long primes
4th
Palindromic primes
10th
Pierpont primes of the 2nd kind
7th
14th
Primes
9th
43rd
Prime quadruplets
(1st member)
4th
Prime quintuplet 2s
(5th member)
2nd
Prime sextuplets
(6th member)
1st
Prime triplets
(1st member)
13th
Prime triplets
(3rd member)
5th
Right-truncatable primes
5th
Safe primes
4th
Sexy primes
(1st member)
6th
25th
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
25th
Sophie germain primes
5th
15th
Super primes
14th
Thabit primes
4th
6th
Twin primes
(1st member)
14th
Two-sided primes
5th
Wedderburn-etherington primes
4th
Woodall primes
2nd
Roman numberals
XXIII
CXCI
Base 2
10111
_{2}
10111111
_{2}
Base 3
212
_{3}
21002
_{3}
Base 4
113
_{4}
2333
_{4}
Base 5
43
_{5}
1231
_{5}
Base 6
35
_{6}
515
_{6}
Base 7
32
_{7}
362
_{7}
Base 8
27
_{8}
277
_{8}
Base 9
25
_{9}
232
_{9}
Base 10
23
_{10}
191
_{10}
Base 11
21
_{11}
164
_{11}
Base 12
1b
_{12}
13b
_{12}
Base 13
1a
_{13}
119
_{13}
Base 14
19
_{14}
d9
_{14}
Base 15
18
_{15}
cb
_{15}
Base 16
17
_{16}
bf
_{16}
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