Prime Numbers
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Numbers
Compare 47 vs 61
Compare 47 vs 61
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Property
47
61
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
47
1
61
1
Prime factorization
47
61
Divisors count
2
2
Divisors
1
,
47
1
,
61
Number of properties
21
12
Additive primes
10th
11th
Carol primes
2nd
Centered decagonal primes
3rd
Centered square primes
4th
Chen primes
14th
Class 1+ primes
9th
Cousin primes
(2nd member)
6th
Cuban primes 1
4th
Isolated primes
4th
Left-truncatable primes
10th
Long primes
6th
8th
Lucas primes
6th
Pierpont primes of the 2nd kind
9th
Primes
15th
18th
Prime triplets
(3rd member)
7th
Pythagorean primes
8th
Safe primes
5th
Sexy primes
(1st member)
10th
12th
Sexy primes
(2nd member)
9th
Sexy prime quadrupletss
(1st member)
4th
Sexy prime quadrupletss
(2nd member)
3rd
Sexy prime triplets
(1st member)
7th
8th
Sexy prime triplets
(2nd member)
6th
Solinas primes
13th
15th
Thabit primes
5th
Twin primes
(2nd member)
7th
Ulam primes
5th
Roman numberals
XLVII
LXI
Base 2
101111
2
111101
2
Base 3
1202
3
2021
3
Base 4
233
4
331
4
Base 5
142
5
221
5
Base 6
115
6
141
6
Base 7
65
7
115
7
Base 8
57
8
75
8
Base 9
52
9
67
9
Base 10
47
10
61
10
Base 11
43
11
56
11
Base 12
3b
12
51
12
Base 13
38
13
49
13
Base 14
35
14
45
14
Base 15
32
15
41
15
Base 16
2f
16
3d
16
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