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Closed on Oct 9, 2026

Algebra and Number Theory

U.S. National Science Foundation · Opportunity number PD-20-1264

Details summarized from the official notice as of Oct 10, 2026. Always confirm eligibility, deadlines and requirements in the official notice before applying.

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This opportunity is closed as of Oct 9, 2026. It is kept here for reference. See the related open opportunities below, or check the official listing in case the agency posts a new cycle.

Key facts

Opportunity numberPD-20-1264
AgencyU.S. National Science Foundation
Assistance listing (ALN, formerly CFDA)47.049
PostedOct 6, 2020
DeadlineOct 9, 2026
Cost sharing or matching requiredNo
Funding typeGrant
CategoryScience technology and other research and development
Last updated hereOct 10, 2026

Summary from the notice

The Algebra and Number Theory program supports research in algebra, algebraic and arithmetic geometry, number theory, and representation theory. Conference proposals
The Algebra and Number Theory program also provides support for conferences, workshops, summer/winter schools, and similar activities. Proposals should be submitted to PD 20-1264 using the "Conference" proposal type in research.gov. Proposals with budgets not exceeding $50,000, which in accordance with NSF policy can be reviewed internally, should be submitted:
  • in May for events that will take place in January through April of the following year
  • in October for events that will take place in May through December of the following year.
In order to allow time for external review, proposals with budget requests exceeding $50,000 should be submitted nine to twelve months before the event is scheduled to take place.

Who can apply

The official notice lists these applicant types as eligible:

  • Unrestricted (open to any type of entity, check the notice)

Registrations you will likely need

Most applications submitted through Grants.gov need the following. Registration can take several weeks, so start early. The notice lists the exact requirements.

Past awards for this program

Totals for assistance listing 47.049 from public USASpending.gov data, as of Sep 23, 2026. Past awards do not predict future funding.

YearListingAwardsTotalAverage
2026 47.049 16 $1,790,278,386 $111,892,399
2025 47.049 21 $1,947,852,199 $92,754,867
2024 47.049 22 $1,981,475,770 $90,067,080

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