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STATUS
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DISCUSS
CONTESTS
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Classical
Challenge
Partial
Tutorial
Riddle
Basics
#tags
ID
NAME
QUALITY
USERS
ACC %
DIFFICULTY
C
I
30757
Ada and Carrot
6
126
17
34
32029
Ada and Connections
6
70
24
24
32840
Ada and Digits
15
166
20
18
32949
Ada and Digits 2
4
71
28
28
30739
Ada and Manure
17
294
11
22
30755
Ada and GCD
20
418
28
15
30691
Ada and Diary
1
56
1
1
30737
Ada and Homework
3
62
34
34
32683
Ada and Kohlrabi
5
65
30
13
32059
Ada and Taxes
15
104
23
22
5151
Alice’s Cube
8
502
24
21
10232
Distinct Primes
83
5704
10
9
4556
Think I will Buy Me a Football Team
30
2158
7
11
5451
Not So Flat After All
9
1107
11
10
13753
Amazing Prime Sequence
60
3279
11
12
30826
Bernoulli numbers
4
6
23
12
31066
Number Breaking
10
670
13
12
21357
Crucial Equation
79
5892
4
9
3505
Prime Number Theorem
24
1509
14
14
9032
Cube Free Numbers
64
4097
12
11
526
Divisors
36
1654
15
14
530
Divisors 2
10
876
14
17
22403
Divisors of factorial
70
1859
14
14
74
Divisor Summation
91
15429
8
10
23963
Easy Factorials
10
114
27
26
4141
Euler Totient Function
143
11174
8
11
22382
Euler Totient Function Depth
23
365
15
16
4942
Integer Factorization (15 digits)
44
3246
11
11
33046
Factorial Modulo Prime
3
24
45
39
25584
Factorial Modulo
25
404
10
15
25067
Fibonacci Polynomial
8
202
10
20
5970
Finding Primes
21
1318
16
15
6264
Rank of a Fraction
4
129
12
34
5978
Frequent Prime Ranges
9
667
13
13
3871
GCD Extreme
76
2340
18
26
41657
GCD Goodness
1
20
17
17
26045
GCD OF MATRIX (hard)
4
101
46
30
41507
GCD Product Sum
3
30
1
23
12005
Grass Planting
8
443
34
17
18202
HUGE GCD
17
647
14
13
4164
A conjecture of Paul Erdős
23
1844
16
14
12241
Classification from Erdős and Selfridge
5
24
28
28
27195
Find The Number
7
208
20
17
6221
Increasing Powers of K
4
349
24
34
6256
Inversion Count
525
16284
16
18
40083
Just Primes
10
103
15
17
40084
Just Primes II
5
19
34
28
12183
Help the Commander in Chief
46
900
15
16
34812
Kth Power Summation
5
53
23
17
3442
The last digit
185
28652
9
8
#number-theory
The problem involves number theory, a branch of pure mathematics