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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
135
17
34
32029
Ada and Connections
7
72
26
28
32840
Ada and Digits
15
176
20
18
32949
Ada and Digits 2
5
75
30
30
30739
Ada and Manure
18
313
11
22
30755
Ada and GCD
20
448
28
15
30691
Ada and Diary
3
58
9
9
30737
Ada and Homework
5
68
34
28
32683
Ada and Kohlrabi
5
71
30
13
32059
Ada and Taxes
16
106
23
23
5151
Alice’s Cube
8
513
24
21
10232
Distinct Primes
85
5905
10
9
4556
Think I will Buy Me a Football Team
30
2184
7
11
5451
Not So Flat After All
9
1126
11
10
13753
Amazing Prime Sequence
61
3352
11
12
30826
Bernoulli numbers
4
7
23
12
31066
Number Breaking
10
849
13
12
21357
Crucial Equation
80
6338
4
9
3505
Prime Number Theorem
25
1535
14
13
9032
Cube Free Numbers
65
4159
12
11
526
Divisors
38
1706
14
13
530
Divisors 2
10
932
12
16
22403
Divisors of factorial
71
1971
14
14
74
Divisor Summation
95
16594
7
10
23963
Easy Factorials
10
114
27
26
4141
Euler Totient Function
147
11912
8
11
22382
Euler Totient Function Depth
24
389
15
16
4942
Integer Factorization (15 digits)
45
3609
11
11
33046
Factorial Modulo Prime
4
31
46
42
25584
Factorial Modulo
25
419
10
15
25067
Fibonacci Polynomial
8
237
11
19
5970
Finding Primes
22
1341
16
15
6264
Rank of a Fraction
4
131
12
34
5978
Frequent Prime Ranges
10
715
14
14
3871
GCD Extreme
81
2970
19
26
41657
GCD Goodness
2
24
17
26
26045
GCD OF MATRIX (hard)
4
135
42
29
41507
GCD Product Sum
7
48
8
22
12005
Grass Planting
11
578
29
19
18202
HUGE GCD
17
684
14
13
4164
A conjecture of Paul Erdős
24
2560
16
15
12241
Classification from Erdős and Selfridge
5
29
28
28
27195
Find The Number
7
216
20
17
6221
Increasing Powers of K
4
356
24
34
6256
Inversion Count
533
17778
16
18
40083
Just Primes
11
118
15
17
40084
Just Primes II
7
25
34
30
12183
Help the Commander in Chief
46
914
15
16
34812
Kth Power Summation
6
56
25
19
3442
The last digit
190
29926
9
8
#number-theory
The problem involves number theory, a branch of pure mathematics