Prime Factor
Public records show a registered, tax-exempt organization in good standing.
What it says it does
The specific objectives and purposes of prime factor corporation are: - to foster the interest of students in math and science topics and ideas that lie beyond the boundaries of the school curriculum. - to design and develop new approaches to present advanced mathematical and scientific concepts in ways that are interesting and accessible to school-age children - to provide classes in advanced math, extracurricular math, creative thinking, and in other scientific topics for children whose needs may not be served at other educational places in the community. - cultivate a community of students and parents who advance the value of extracurricular mathematics as a tool to develop students creativity and interest in learning. - to help children prepare for careers in mathematics, science, or other highly qualified fields. - to help children become creative professionals capable of achieving the top levels in their respective fields of work and ready to apply their knowledge to serve the co
- Income
- $326,429
- Spending
- $309,879
- Spent on programs
- 88%
- Reserves
- 4.7 months of spending
- Largest source of income
- fees for its services, 97%
- Employees
- 5
- Volunteers
- 15
- Highest pay
- $39,938, lead teacher
Source: Form 990 for the year ending July 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Financial health
Good: 80 out of 100. Higher than 53% of charities in its peer group (education, $250k to $1m).
Reserves
20 of 35Spendable reserves would cover 4.7 months of spending.
Debt
20 of 20It owes 0% of what it owns.
Living within its means
15 of 15Income exceeded spending by 5% of income.
Income trend
10 of 15Income fell 5% on the year before.
Spending floor
15 of 1588% of spending went to programs and raising each dollar of donations cost 0 cents.
Source: Form 990 for the year ending July 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Governance
Good: 76 out of 100. Higher than 61% of charities in its peer group (education, $250k to $1m).
Independent board
25 of 255 of 7 voting board members are independent.
Conflict of interest policy
15 of 15Has a written conflict of interest policy.
Whistleblower policy
0 of 8Reports no written whistleblower policy.
Record keeping policy
0 of 7Reports no written policy on keeping and destroying records.
Board minutes
5 of 5Keeps minutes of board meetings.
Board sees the tax return
10 of 10Gave the board a copy of this return before filing it.
Pay set independently
5 of 5Sets its chief executive's pay through independent review and comparison.
Independent check of accounts
6 of 15Its accounts were not audited or reviewed by an independent accountant.
No reported misuse
10 of 10Reports no diversion of assets, excess benefits or loans to insiders.
Source: Form 990 for the year ending July 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Impact evidence
Describes programs. Its tax return describes what it does but we have found no measurable results in it.
Programs described in its return (1)
- $272,360 spent. During the 2024-25 school year, prime factor achieved several milestones as a nonprofit organization. We served over 350 students by providing year-long stem classes in mathematics and computer science. Our unique advanced classes included math circles for students in grades 2, 3-4, 4-5, 5-6, 6-7, and 8-9, as well as programming classes in Scratch, AppLab, Python, JavaScript, electrical engineering with Arduino, and Java for students in grades 3 up to upper high school. We also offered coding competition and math contest preparation classes, and organized several mathematical contests such as Math Kangaroo, Noetic Learning, AMC8 and AMC10. As a nonprofit organization, we also made a positive impact by participating in efforts to help children from the families of refugees or those facing economic hardship. We offered free and discounted enrollment in our classes, provided one-on-one tutoring for no cost. We ran a free weekly online math circle for grades 36 students in Odessa, Ukraine, throughout the 2024-25 school year. We traveled to Eugene, Oregon, to help organize the Eugene Math Festival, a free family math event open to all participants. Our teachers actively participated in preparation an organization of Math Hour Olympiad, a unique oral math competition for Middle school children, free to all participants. https://sites.math.washington.edu/~mathcircle/mathhour/olympiad.html Math Hour Olympiad is a renowned math contest organized by numerous math professionals volunteering for the event, coordinated by the Math department of the University of Washington. Overall, these achievements demonstrate Prime Factors commitment to providing high-quality STEM education and making a positive impact in our community and beyond.
Source: Form 990 for the year ending July 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Legitimacy checks
Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Has the IRS revoked its tax-exempt status? Passed.
Not on the IRS automatic revocation list.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.
Are donations tax-deductible? Passed.
On the IRS list of organizations eligible to receive tax-deductible contributions.
Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending July 2025.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since May 2019.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.
Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.