ID NAME QUALITY USERS ACC % DIFFICULTY C I
19975 Amazing Prime Sequence (hard)   2 20
50
50
20173 Counting Divisors (square)   3 86
28
39
20174 Counting Divisors (cube)   1 64
17
50
34096 Counting Divisors (general)   17
19985 GCD Extreme (hard)   30
34
34
34357 Ludic Numbers (hard)   1 1
19913 Counting Pythagorean Triples   1 8
34
34

#sub-linear