Prime Numbers
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Numbers
Compare 5 vs 251
Compare 5 vs 251
Compare
vs
Compare
Property
5
251
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
5
^{1}
251
^{1}
Prime factorization
5
251
Divisors count
2
2
Divisors
1
,
5
1
,
251
Number of properties
36
10
Additive primes
3rd
Bell primes
2nd
Centered square primes
1st
Chen primes
3rd
41st
Class 1+ primes
3rd
Dihedral primes
2nd
Factorial primes
3rd
Fermat primes
2nd
Fibonacci primes
3rd
Good primes
1st
19th
Harmonic primes
1st
20th
Isolated primes
21st
Left-truncatable primes
3rd
Multiplicative primes
3rd
Palindromic primes
3rd
Pierpont primes
3rd
Pierpont primes of the 2nd kind
3rd
Primes
3rd
54th
Prime quadruplets
(1st member)
1st
Prime quintuplet 2s
(1st member)
1st
Prime triplets
(1st member)
1st
Proth primes
2nd
Pythagorean primes
1st
Restricted left-truncatable primes
2nd
Right-truncatable primes
3rd
Safe primes
1st
Sexy primes
(1st member)
1st
30th
Sexy prime quadrupletss
(1st member)
1st
5th
Sexy prime triplets
(1st member)
1st
15th
Solinas primes
2nd
30th
Sophie germain primes
3rd
18th
Super primes
2nd
Thabit primes
2nd
Twin primes
(1st member)
2nd
Twin primes
(2nd member)
1st
Two-sided primes
3rd
Wilson primes
1st
Roman numberals
V
CCLI
Base 2
101
_{2}
11111011
_{2}
Base 3
12
_{3}
100022
_{3}
Base 4
11
_{4}
3323
_{4}
Base 5
10
_{5}
2001
_{5}
Base 6
5
_{6}
1055
_{6}
Base 7
5
_{7}
506
_{7}
Base 8
5
_{8}
373
_{8}
Base 9
5
_{9}
308
_{9}
Base 10
5
_{10}
251
_{10}
Base 11
5
_{11}
209
_{11}
Base 12
5
_{12}
18b
_{12}
Base 13
5
_{13}
164
_{13}
Base 14
5
_{14}
13d
_{14}
Base 15
5
_{15}
11b
_{15}
Base 16
5
_{16}
fb
_{16}
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