The Hitchhiker's Guide to the Galaxy movie has taken £4.2m at the UK box office, mirroring its "answer to life, the universe and everything" - 42.
The Hitchhiker's Guide is also top of the US box office
In a coincidence to delight fans, the film took £4,223,150 in the UK between Thursday and Bank Holiday Monday.
It is based on the stories of the late Douglas Adams, which state that the answer to life is simply "42" without giving any further explanation.
The movie also topped the US box office chart, taking $21.7m (£14.2m).
Robert Mitchell of UK distributor Buena Vista International said film-makers were "delighted" with the movie's "incredibly strong opening".
He said the Hitchhiker's movie beat action film XXX: The Next Level at the UK box office, as it had already done in the US.
UK BOX OFFICE CHART
1. The Hitchhiker's Guide to the Galaxy (£2.8m)
2. XXX: The Next Level (£920,506)
3. The Interpreter (£749,529)
4. The Wedding Date (£672,417)
5. The Amityville Horror (£547,889)
Source: Screen International (Figures 29 April to 1 May)
"To beat off the hottest weekend of the year so far in the UK and strong competition from XXX in the US to record these figures is a phenomenal achievement," Mr Mitchell added.
The XXX sequel, which sees rapper Ice Cube take over from action star Vin Diesel, made one third of Hitchhiker's takings despite opening at almost 400 cinemas in UK and Eire.
Last week's number one, Nicole Kidman's thriller The Interpreter, dropped to three but continued to perform, its third week takings of £749,529 taking its total UK box office haul to more than £5m.
Romantic comedy The Wedding Date fell to four while the Amityville Horror remake slipped to five.
Elsewhere in the chart, Downfall has now become the most successful German-language film ever at the UK box office with total takings of £1.33m.
The Adolf Hitler drama - in 12th place after five weeks on release - beat the £1.24m accrued by 2003 comedy Good Bye Lenin over the weekend.