The time includes concurrent sentences for murder and attempted murder.
Earlier this week, Rudakubanapleaded guiltyto three counts of murder and 10 counts of attempted murder months.
He pleaded guilty to possessing terrorist material and producing ricin.
A prison van carrying Axel Rudakubana arriving at Liverpool Crown Court for his sentencing after he admitted to the murders of three girls at a dance class in SouthportPeter Byrne/PA Images/Getty Images
Rudakubana was 17 at the time of the attacks, which occurred inSouthport, England.
Eight other children and two adults suffered serious injuries.
Others were left in critical condition.
