Click green/red button to start/stop Click and hold + to increase number manually Click and hold - to decrease number manually Click the up arrow to go to a specified number
The sequence of the 78498 prime numbers less than one million are shown Delays are different depending on the difference of the two prime numbers The colors of digits: 0 red 1 vermilion 2 marigold 3 yellow 4 chartreuse 5 light green 6 green 7 cyan green 8 cyan 9 blue
