from fractions import gcd

N = input()
K = input()
xy = [map(int, raw_input().split()) for _ in xrange(K)]
A = range(N)

for x, y in xy:
    A[x-1], A[y-1] = A[y-1], A[x-1]

uf = []
for i in xrange(N):
    for u in uf:
        if i in u or A[i] in u:
            u.add(i)
            u.add(A[i])
            break
    else:
        uf.append(set([i, A[i]]))

uf = map(len, uf)
lcm = uf[0]
for i in xrange(1, len(uf)):
    lcm = lcm*uf[i]/gcd(lcm, uf[i])
print lcm