Prime Numbers
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Numbers
Compare 53 vs 251
Compare 53 vs 251
Compare
vs
Compare
Property
53
251
Type
prime
prime
Unique factors
1
1
Total factors
1
1
Prime factorization
53
1
251
1
Prime factorization
53
251
Divisors count
2
2
Divisors
1
,
53
1
,
251
Number of properties
18
10
Chen primes
15th
41st
Class 1+ primes
10th
Good primes
7th
19th
Harmonic primes
20th
Isolated primes
5th
21st
Left-truncatable primes
11th
Pierpont primes of the 2nd kind
10th
Primes
16th
54th
Pythagorean primes
7th
Restricted right-truncatable primes
1st
Right-truncatable primes
9th
Sexy primes
(1st member)
11th
30th
Sexy primes
(2nd member)
10th
Sexy prime quadrupletss
(1st member)
5th
Sexy prime quadrupletss
(3rd member)
3rd
Sexy prime triplets
(1st member)
15th
Sexy prime triplets
(2nd member)
7th
Sexy prime triplets
(3rd member)
6th
Solinas primes
30th
Sophie germain primes
8th
18th
Two-sided primes
7th
Ulam primes
6th
Roman numberals
LIII
CCLI
Base 2
110101
2
11111011
2
Base 3
1222
3
100022
3
Base 4
311
4
3323
4
Base 5
203
5
2001
5
Base 6
125
6
1055
6
Base 7
104
7
506
7
Base 8
65
8
373
8
Base 9
58
9
308
9
Base 10
53
10
251
10
Base 11
49
11
209
11
Base 12
45
12
18b
12
Base 13
41
13
164
13
Base 14
3b
14
13d
14
Base 15
38
15
11b
15
Base 16
35
16
fb
16
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