Prime Numbers
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Numbers
Compare 13 vs 263
Compare 13 vs 263
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Property
13
263
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
13
1
263
1
Prime factorization
13
263
Divisors count
2
2
Divisors
1
,
13
1
,
263
Number of properties
32
14
Additive primes
32nd
Centered square primes
2nd
Chen primes
6th
43rd
Cousin primes
(1st member)
3rd
Cuban primes 2
1st
Emirps
1st
Fibonacci primes
4th
Happy primes
2nd
14th
Harmonic primes
2nd
21st
Isolated primes
23rd
Left-truncatable primes
5th
Long primes
22nd
Lucky primes
3rd
Multiplicative primes
5th
Pierpont primes
5th
Primes
6th
56th
Prime quadruplets
(2nd member)
2nd
Prime quadruplets
(4th member)
1st
Prime quintuplet 1s
(3rd member)
1st
Prime quintuplet 2s
(2nd member)
2nd
Prime quintuplet 2s
(4th member)
1st
Prime sextuplets
(3rd member)
1st
Prime triplets
(1st member)
4th
Prime triplets
(2nd member)
3rd
Prime triplets
(3rd member)
2nd
Proth primes
3rd
Pythagorean primes
2nd
Safe primes
12th
Sexy primes
(1st member)
4th
32nd
Sexy primes
(2nd member)
2nd
31st
Sexy prime quadrupletss
(3rd member)
5th
Sexy prime triplets
(2nd member)
2nd
16th
Sexy prime triplets
(3rd member)
15th
Solinas primes
5th
32nd
Thabit primes of the 2nd kind
2nd
Twin primes
(2nd member)
3rd
Ulam primes
4th
Wilson primes
2nd
Roman numberals
XIII
CCLXIII
Base 2
1101
2
100000111
2
Base 3
111
3
100202
3
Base 4
31
4
10013
4
Base 5
23
5
2023
5
Base 6
21
6
1115
6
Base 7
16
7
524
7
Base 8
15
8
407
8
Base 9
14
9
322
9
Base 10
13
10
263
10
Base 11
12
11
21a
11
Base 12
11
12
19b
12
Base 13
10
13
173
13
Base 14
d
14
14b
14
Base 15
d
15
128
15
Base 16
d
16
107
16
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