t = int(input())
#print(t)

for i in range(0, t):
    v = [int(s) for s in input().split()]
    a, b, c = v[0], v[1], v[2]
    ans = 0
    cnt = 0
    while a % c == 0:
        a = a // c
        cnt += 1
    while b > 0:
        if b % 2 == 1:
            ans += cnt
            ans %= 998244353
        a = a * a
        cnt *= 2
        cnt %= 998244353
        while a % c == 0:
            a = a // c
            cnt += 1
        b >>= 1
    print(ans % 998244353)