You forgot to check that with Scripture. Noah was 600 when the flood rose. Lamech was 182 when he had Noah. Methuselah lived 782 years after he had Lamech.
So where do you get one week?
What week are you refering to AP? Daniel’s 70th week?
I hope reading this might help you understand. Let me know if I can help you after your done. Thanks AP
http://www.christianityoasis.com/endtimes/70thWEEK.htm