Xn+1 = (aXn + c) mod m

a = 7567025607324980273 = 690379b2b2e3d43116
c = 5279421 = 508ebd16
m = 18446744073709551616 = 1000000000000000016
X0 = 0

gcd(c, m) = 1
(a - 1) is divisible by all prime factors of m (= 264)
(a - 1) is divisible by 4, and m is a multiple of 4.
=> LCG has a full period for all seed values.