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STATUS
RANKS
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
127
17
34
32029
Ada and Connections
6
69
24
24
32840
Ada and Digits
15
167
20
18
32949
Ada and Digits 2
5
71
30
30
30739
Ada and Manure
17
297
11
22
30755
Ada and GCD
20
432
28
15
30691
Ada and Diary
1
55
1
1
30737
Ada and Homework
3
63
34
34
32683
Ada and Kohlrabi
5
66
30
13
32059
Ada and Taxes
15
102
23
22
5151
Alice’s Cube
8
501
24
21
10232
Distinct Primes
83
5771
10
9
4556
Think I will Buy Me a Football Team
30
2165
7
11
5451
Not So Flat After All
9
1116
11
10
13753
Amazing Prime Sequence
61
3300
11
12
30826
Bernoulli numbers
4
7
23
12
31066
Number Breaking
10
747
13
12
21357
Crucial Equation
79
5994
4
9
3505
Prime Number Theorem
25
1520
14
13
9032
Cube Free Numbers
65
4117
12
11
526
Divisors
37
1680
14
13
530
Divisors 2
10
900
14
17
22403
Divisors of factorial
70
1906
14
14
74
Divisor Summation
92
15771
8
10
23963
Easy Factorials
10
112
27
26
4141
Euler Totient Function
144
11407
8
11
22382
Euler Totient Function Depth
24
373
15
16
4942
Integer Factorization (15 digits)
45
3362
11
11
33046
Factorial Modulo Prime
3
28
45
39
25584
Factorial Modulo
25
407
10
15
25067
Fibonacci Polynomial
8
209
10
20
5970
Finding Primes
22
1326
16
15
6264
Rank of a Fraction
4
129
12
34
5978
Frequent Prime Ranges
9
688
13
13
3871
GCD Extreme
77
2488
18
26
41657
GCD Goodness
1
21
17
17
26045
GCD OF MATRIX (hard)
3
118
47
28
41507
GCD Product Sum
4
35
5
21
12005
Grass Planting
9
492
32
17
18202
HUGE GCD
17
666
14
13
4164
A conjecture of Paul Erdős
23
2004
16
14
12241
Classification from Erdős and Selfridge
5
27
28
28
27195
Find The Number
7
207
20
17
6221
Increasing Powers of K
4
350
24
34
6256
Inversion Count
528
16691
16
18
40083
Just Primes
11
106
15
17
40084
Just Primes II
7
21
34
30
12183
Help the Commander in Chief
46
905
15
16
34812
Kth Power Summation
6
54
25
19
3442
The last digit
188
29211
9
8
#number-theory
The problem involves number theory, a branch of pure mathematics