for i = 1 to 50

	if i < 2 then

		let p = 0

	else

		if i = 2 then

			let p = 1

		else

			if i % 2 = 0 then

				let p = 0

			else

				let p = 1

				for j = 3 to int(i ^ .5) step 2

					if i % j = 0 then

						let p = 0
						break j

					endif

					wait

				next j

			endif

		endif

	endif

	if p <> 0 then

		print i

	endif

next i