love.math.getRandomSeed
Gets the seed of the random number generator.

The seed is split into two numbers due to Lua's use of doubles for all number values - doubles can't accurately represent integer values above 2^53, but the seed can be an integer value up to 2^64.
low, high = love.math.getRandomSeed()
low number Integer number representing the lower 32 bits of the random number generator's 64 bit seed value.
high number Integer number representing the higher 32 bits of the random number generator's 64 bit seed value.