'prodigious achievement' is correct and usable in written English.
It can be used to describe an accomplishment that is very impressive, especially one that goes beyond expectations. For example: The mathematician's prodigious achievement of solving Fermat's Last Theorem was celebrated around the world.
Performed in a nightclub and cast in the form of a continuous medley lasting three and a half hours, this prodigious achievement invites the listener to revel not just in the musicians' extraordinary inventiveness but in the ceaselessly surprising nature of the material from which they draw their inspiration.
In cooperation with the Greek government, with already-established Greek entrepreneurs as well as with Greek-American business leaders, this fund could be a prodigious achievement that could once and for all, provide the people the opportunity to save their country's economy.
Despite these prodigious achievements, slang remains a notoriously slippery object of study.
But his prodigious achievements -- winning 7 of 11 majors from August 1999 to June 2002; becoming the first player to win four consecutive professional majors; and winning nine times, including three major championships, in his superb 2000 -- created a monster.
She is also the subject of the documentary, A Ballerina's Tale, about her prodigious achievements in defiance of personal injuries and institutional standards, which debuted at Tribeca Film Festival in April.
Welles' talents as a director and radio producer were manifold – when the classic film Citizen Kane and broadcast drama War of the Worlds are just two among your many prodigious achievements, you're far from obligated to prove your legitimacy by earning a Grammy as well.
Additional funding can assure that the already prodigious achievements of the NLM will guarantee global access to health-related literature in a variety of languages and cultural contexts.
Barry Bonds is way too self-satisfied to fret that suspicions about his use of performance-enhancing drugs may have fouled his prodigious baseball achievements badly enough to keep him from entering the Hall of Fame in two years.
It doesn't take long to realize that his career demonstrates the combination of natural (probably prodigious) talent, early achievement and continued growth and innovation that we demand of major artists.
Luckily, his achievements are so prodigious – six-time world champion and much-decorated Olympian – that his phone company relented.
Mr. Bernanke lauded Ms. Duflo's prodigious publishing in academic journals, an achievement that Mr. Banerjee attributed to her exceptional energy.
