How to Get Into MIT PRIMES in 2027
Updated: Sep 11
Updated: September 10, 2026
TL;DR
MIT PRIMES is a free, highly selective year-long research program for high school juniors and sophomores, run through MIT's math department. Since 2025, the program has narrowed to math and computational biology only, with no new admissions to the computer science track, so double check that your interests still fit before you apply. Applications for the next cycle open in September 2026, close around December 1, and decisions come out in late January. There's no application fee, and admission comes down to a problem set, a questionnaire, and letters of recommendation, not your zip code. If you want research experience with better odds of acceptance, or a subject outside math and computational biology, the Lumiere Research Scholar Program is worth a look too.
What is MIT PRIMES?
If you're serious about math or computational biology research in high school, you've probably heard of MIT PRIMES.
MIT PRIMES (Program for Research in Mathematics, Engineering, and Science for High School Students) is a free, year-long research program run out of MIT's math department. Students are paired with a mentor, usually a graduate student or postdoc, and spend the year working on an original research project or an advanced reading course. The program has run since 2011 and has produced a long track record of student papers and national competition results.
As of the 2025 admissions cycle, MIT PRIMES narrowed its research focus to mathematics and computational biology, and it is no longer accepting new students into the computer science track. MIT's math department has said it's encouraging other departments, like EECS, to set up similar programs for students still interested in computer science research.
Which MIT PRIMES track should you apply to?
PRIMES isn't one program, it's a family of them, and picking the right track matters for your odds:
MIT PRIMES is for students who can realistically get to MIT for in-person mentoring, though MIT's own application page states that non-local students can also apply through the same portal and meet with mentors remotely.
PRIMES-USA is explicitly for juniors and sophomores living in the U.S. outside Greater Boston, with all mentoring done remotely.
PRIMES Circle is a spring-term math enrichment program for local students from underrepresented backgrounds, and you can apply to it alongside MIT PRIMES on the same application.
Yulia's Dream is a dedicated track for talented students in grades 9-11 from Ukraine.
MathROOTS is a free two-week residential summer program for nationally selected students from underrepresented or underserved backgrounds, run in partnership with MIT Admissions.
CrowdMath is open to students worldwide, including those outside the U.S., and runs as a year-long collaborative online research project with the Art of Problem Solving.
If you're not sure which track fits, start with the main PRIMES program page before you apply anywhere.
Is MIT PRIMES competitive to get into?
Yes, very. MIT PRIMES admits a small number of students each year out of a large applicant pool, and an advanced math background is effectively expected even though it's not formally required. MIT doesn't publish an exact acceptance rate.
What are the MIT PRIMES eligibility requirements?
To apply to MIT PRIMES or PRIMES-USA, you need to be a high school junior or sophomore residing in the United States, including homeschooled students. There's no hard prerequisite beyond that, but MIT lists several things that strengthen an application when you have at least one of them:
Qualifying for USAMO or USAJMO
Earning an A in a college-level, proof-based math course (online courses count)
Completing a recognized summer math program, such as Canada/USA MathCamp, AwesomeMath, HCSSiM, MathILy, PROMYS, the Ross Program, or SUMaC, backed by a counselor's letter of recommendation
A letter of recommendation from a college math professor
None of these are strict requirements, but applicants without at least one of them are competing at a real disadvantage.
When is the MIT PRIMES application deadline?
For the most recently completed cycle, the deadline was December 1, 2025, and admissions decisions went out January 28. MIT's own page states that the application link for the next cycle appears in September 2026, which means it may already be open by the time you're reading this.
How to apply to MIT PRIMES, step by step
Confirm you're eligible: a junior or sophomore in the U.S., applying to the track that matches where you live.
Fill out the online application, which functions as a questionnaire about your background and interests.
Arrange letters of recommendation, ideally from a math teacher or, if you have one, a college math professor.
Submit solutions to the current problem set. There's no application fee. Past problem sets and solutions going back to 2013 are posted on MIT's site, and working through a few is the single best way to gauge whether you're ready.
Wait for a decision. Based on the most recent cycle, expect roughly two months between the deadline and results.
How to strengthen your MIT PRIMES application
Working through several years of past problem sets before you apply will tell you more about your readiness than anything else on this list. Beyond that:
Take the most advanced, proof-based math course available to you, and aim for a strong grade in it.
If USAMO or USAJMO is within reach, qualifying is one of the clearest signals PRIMES looks for.
Consider a recognized summer math program like PROMYS the summer before you apply. It won't guarantee admission, but MIT explicitly lists it as a positive signal when paired with a counselor's letter.
Build a relationship with a math teacher who can speak specifically to your problem-solving ability, not just your grades.
Take academic integrity seriously. MIT is explicit that any cheating on the application, including unauthorized collaboration on the problem set, can mean disqualification and notification of your school.
If you compete in math, our roundup of online math competitions for high schoolers is a reasonable place to find other credentials that pair well with a PRIMES application.
What does the program schedule look like once you're in?
PRIMES runs on a four-phase calendar year:
Phase I (January to Pi Day): an advanced reading period. You're assigned a mentor, given readings to prepare for research, and submit a short reading report by early March.
Phase II (mid-March to May 31): active research, with a progress report due by the end of May.
Phase III (June 1 to August 31): independent study over the summer, with flexible time commitment so it doesn't conflict with other summer plans.
Phase IV (September 1 to December 31): the write-up period, ending with a presentation at the Fall PRIMES conference and a final paper, which is posted publicly and can be submitted to competitions or journals.
What do MIT PRIMES students actually research?
Projects run across math, computer science (legacy track, no longer accepting new students), and computational and physical biology, with topics proposed by MIT faculty and grad students. Past participants have worked on problems in areas like number theory, combinatorics, and computational biology, with mentors including MIT faculty. You can browse past PRIMES research papers directly on MIT's site to get a feel for the level of work expected.
FAQ
Is MIT PRIMES still accepting computer science applicants? No. As of the 2025 cycle, MIT PRIMES narrowed its focus to math and computational biology, and it isn't admitting new students into the computer science track.
Do you have to live near Boston to apply to MIT PRIMES? Not necessarily. PRIMES-USA exists specifically for juniors and sophomores living outside Greater Boston, and MIT's own page states non-local students can also apply to MIT PRIMES itself through the same portal.
Is there an application fee for MIT PRIMES? No, there's no fee to apply to MIT PRIMES, PRIMES-USA, or PRIMES Circle.
What GPA or math background do you need for MIT PRIMES? There's no published minimum, but a strong proof-based math background helps a lot. Qualifying for USAMO or USAJMO, earning an A in a college-level proof-based math course, or completing a recognized summer math program are all listed as preferred, though not required.
When should you apply to MIT PRIMES? Based on the most recent cycle, the application opened in the fall and closed around December 1, with decisions out by late January. Check MIT's application page directly, since the exact 2027-cycle dates weren't posted at the time of this update.
Can international students apply to MIT PRIMES? Not to MIT PRIMES or PRIMES-USA directly, since both require U.S. residency, but international students can participate in CrowdMath, and students from Ukraine specifically can apply to Yulia's Dream.
Does MIT PRIMES cost anything? No, the program is entirely free, including for local students who meet with mentors in person.
What happens if you're not admitted to MIT PRIMES? Consider a recognized summer math program like PROMYS or a math competition to build your profile, or look at other research options, including the Lumiere Research Scholar Program, which covers a much broader range of subjects.
One other option: the Lumiere Research Scholar Program
If your interests fall outside math and computational biology, or you want better odds of getting matched with a research mentor, consider the Lumiere Research Scholar Program, a selective online research program founded by researchers from Harvard and Oxford. Last year, over 4,000 students applied for 500 spots. You can apply here.