The average height for a male in Russia in 1920 was 5'5.7". It is now 5'10", a 6.5% increase. There is a relationship between height and penis length. Therefore, it can be assumed that between 1920 and 2020, the average penis size has also increased by 6.5%. Grigori Rasputin, who died in 1916, had an infamous 13 inch penis which is now on display in a Russian museum. Using the logic presented earlier, it can be assumed that, in today's standards, Rasputin's penis would be nearly 14 inches long. Jona Flacon currently holds the record for longest erect penis at 13.5 inches long. In conclusion, Grigori Rasputin's flaccid penis would be 14 inches long, with an erection about a foot and a half long, making him, by far, the man with the largest penis ever.