def get_n(p1, p2):
d = mtools.count_digits(p1)
dd = 10**d
_, b0 = euclidean(dd, p2)
t = int(math.floor(p1*b0/dd))
b = p1*b0 - dd*t
assert b > 0
n = b*p2
return n
def count_partition(n):
stack = [(1, n, [])]
cnt = 0
ls = []
while stack:
p, r, l = stack.pop()
j = mtools.count_digits(p)
k = mtools.count_digits(r)
for (m,r1) in trunc_number(r, j, k/2):
l2 = l[:]
if m > p and is_prime(m):
l2.append(m)
stack.append((m, r1, l2))
if r1 > m and is_prime(r1):
l3 = l2[:]
l3.append(r1)
cnt += 1
ls.append(l3)
return cnt, ls