Richard Huckle was given 22 life tariffs at the Old Bailey after he admitted 71 sexual offences on young children mainly in Malaysia but also in Cambodia.
The Old Bailey heard how Huckle, from Ashford in Kent, admitted an unprecedented number of offences against children aged between six months and 12 years from 2006 to 2014.
When Judge Peter Rook QC told the 30-year-old he would serve a minimum term of 25 years he placed his hands together and appeared to bow his head in prayer.
Twenty-three children from poor Christian communities in the Malaysian capital of Kuala Lumpur were identified in 71 charges, although Huckle's tally of abuse which he catalogued on a "Pedopoints ledger" was much higher.
The court heard how Huckle used his faith to gain access to children and masqueraded as a Christian missionary who had devoted his life to God.
The judge told him: "You have pleaded guilty to as many as 71 sexual offences. It is very rare indeed that a judge has to sentence sexual offending by one person on such a scale as this."
Huckle was consumed by and obsessed with his own sexual gratification, he said.
And his "campaign of rape" was of "deep concern", the judge said.
As Huckle was sent down, a woman in the public gallery shouted out that "1,000 deaths is too good for you".
Huckle first visited Malaysia on a teaching gap year when he was 19 and went on to groom more children posing as a respectable Christian English teacher and philanthropist.
Listen to Pete Saunders from NAPAC speaking to Premier's Marcus Jones.
Listen to Donald Findlater from the Lucy Faithful Foundation speaking to Premier's Marcus Jones.
