Students engaged in a Prime Factor math session

WELCOME TO PRIME FACTOR

Learning that feels like discovery

Prime Factor offers advanced STEM classes and programs for students who enjoy solving problems, asking questions, and exploring ideas beyond the standard school curriculum.

IN-PERSON in Redmond, WA
ONLINE from anywhere

Since 2010

Inspiring students

AMS books

AMS math books authors

400+

Advanced math and CS courses taught

Logic Land

Math festival we created

Early registration prices
until August 31st

Fall Classes
Now Enrolling

Our new schedule is ready, with a wide selection of math, coding, and STEM classes for every age

Grades 2–11

Students at Prime Factor summer camp

NEWS, EVENTS, UPCOMING PROGRAMS

Announcements

Follow what students are learning, building, and exploring throughout the year

AUGUST 2026

Summer Camps Now Enrolling

Coming up: Data Science and AI on August 17-21.

Learn More

FALL 2026

Upcoming AMC Competitions

Registration for AMC8 and AMC10/12 will open here this fall. Open to all students in the area.

Stay in the Loop

Fall 2026

Math Kangaroo and Noetic Learning Math Contest

We will host Noetic contest in November and Math Kangaroo in March. The registration will open soon!

Learn More

OUR PROGRAMS

What we teach

IN-PERSON in Redmond, WA
ONLINE from anywhere

MATHEMATICAL CIRCLES

Advanced problem solving, mathematical reasoning, and challenging mathematics for motivated students.

Grade 2 → 10 Learn More →

COMPUTER SCIENCE

Advanced programming, algorithms, and computational thinking for future innovators and problem solvers.

Grade 4 → 11 Learn More →

CHESS

Strategy, planning, and confident play.

Grade 2 → 8 Learn More →

How Prime Factor is different

Why families choose Prime Factor

We believe students learn best when they're challenged, encouraged to ask questions, and surrounded by peers who share their curiosity. Our classes build confidence, creativity, and lasting problem-solving skills.

Not your typical math class

Students don't just solve problems — they explore, discuss, and understand.

Learning beyond school

From logical reasoning to AI and linguistics, students discover ideas beyond the school curriculum.

Small classes, personal attention

Every student is seen, supported, and challenged at the right level.

Ideas you can see and explore

We bring abstract concepts to life with visual models, puzzles, games, and hands-on activities.

Exceptional instructors

Learn from mathematicians, engineers, researchers, and experienced educators.

AMS-published curriculum

Our mathematics books have been published by the American Mathematical Society.

Testimonials

"I was a student at Prime Factor Math Circle for at least five years... The math classes helped me a ton in competitions because they focus on logic and proofs, not standard school math."

A former student now at UW

"The goal of math enrichment programs such as Prime Factor is to introduce students to mathematical ideas they may never see in school, even at the university level. My son has participated in Prime Factor for the past two years. Each week I look at his homework and think, 'I wish I could have solved problems like this when I was a child.'"

Junior Math Circle 1 parent, PhD in Math

"I am currently pursuing a bachelor's degree at the University of Washington after attending Prime Factor's math and computer science programs from elementary through high school. One reason I stayed for so long was their unique approach. In math classes, the emphasis was on creativity and logical reasoning. I learned techniques never offered in school. Prime Factor gave me a distinctive set of skills I couldn't have accessed elsewhere."

A former student

"At Prime Factor, students engage with challenging topics such as combinatorics, number theory, graph theory, and mathematical induction. While not part of the standard school curriculum, these ideas are important in many science and technology careers. Prime Factor focuses on building logical thinking, creative problem-solving, and the analytical thinking that technical fields value."

A parent

Place your child in the right level

We'll help you choose the right level - through a short placement test or personal guidance.

Community

We're a non-profit.

Prime Factor is a nonprofit organization dedicated to making exceptional math, coding, and STEM education accessible to every curious student.

Learn About Our Mission
Prime Factor community