Prime Numbers
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Numbers
Compare 2 vs 7
Compare 2 vs 7
Compare
vs
Compare
Property
2
7
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
2
^{1}
7
^{1}
Prime factorization
2
7
Divisors count
2
2
Divisors
1
,
2
1
,
7
Number of properties
26
37
Additive primes
1st
4th
Bell primes
1st
Carol primes
1st
Chen primes
1st
4th
Class 1+ primes
1st
4th
Cousin primes
(2nd member)
1st
Cousin primes
(1st member)
2nd
Cuban primes 1
1st
Dihedral primes
1st
Double mersenne primes
1st
Euclid primes
1st
3rd
Factorial primes
1st
4th
Fibonacci primes
1st
Happy primes
1st
Isolated primes
1st
Kynea primes
1st
2nd
Left-truncatable primes
1st
4th
Long primes
1st
Lucas primes
1st
3rd
Lucky primes
2nd
Mersenne primes
2nd
Mills primes
1st
Multiplicative primes
1st
4th
Palindromic primes
1st
4th
Pierpont primes
1st
4th
Pierpont primes of the 2nd kind
1st
4th
Primes
1st
4th
Prime quadruplets
(2nd member)
1st
Prime quintuplet 1s
(1st member)
1st
Prime quintuplet 2s
(2nd member)
1st
Prime sextuplets
(1st member)
1st
Prime triplets
(1st member)
2nd
Prime triplets
(2nd member)
1st
Quartan primes
1st
Restricted left-truncatable primes
1st
Right-truncatable primes
1st
4th
Safe primes
2nd
Sexy primes
(1st member)
2nd
Sexy prime triplets
(1st member)
2nd
Solinas primes
3rd
Sophie germain primes
1st
Thabit primes
1st
Thabit primes of the 2nd kind
1st
Twin primes
(2nd member)
2nd
Two-sided primes
1st
4th
Ulam primes
1st
Wedderburn-etherington primes
1st
Woodall primes
1st
Roman numberals
II
VII
Base 2
10
_{2}
111
_{2}
Base 3
2
_{3}
21
_{3}
Base 4
2
_{4}
13
_{4}
Base 5
2
_{5}
12
_{5}
Base 6
2
_{6}
11
_{6}
Base 7
2
_{7}
10
_{7}
Base 8
2
_{8}
7
_{8}
Base 9
2
_{9}
7
_{9}
Base 10
2
_{10}
7
_{10}
Base 11
2
_{11}
7
_{11}
Base 12
2
_{12}
7
_{12}
Base 13
2
_{13}
7
_{13}
Base 14
2
_{14}
7
_{14}
Base 15
2
_{15}
7
_{15}
Base 16
2
_{16}
7
_{16}
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