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Wolfram Language & System Documentation Center
IntegerPartitions
  • See Also
    • PartitionsP
    • Divisors
    • Subsets
    • IntegerDigits
    • NumberDecompose
    • FrobeniusSolve
    • PowersRepresentations
  • Related Guides
    • Number Theoretic Functions
    • Number Theory
    • Diophantine Equations
    • Additive Number Theory
    • Integer Functions
    • Discrete Mathematics
  • Tech Notes
    • Integer and Number Theoretic Functions
    • See Also
      • PartitionsP
      • Divisors
      • Subsets
      • IntegerDigits
      • NumberDecompose
      • FrobeniusSolve
      • PowersRepresentations
    • Related Guides
      • Number Theoretic Functions
      • Number Theory
      • Diophantine Equations
      • Additive Number Theory
      • Integer Functions
      • Discrete Mathematics
    • Tech Notes
      • Integer and Number Theoretic Functions

IntegerPartitions[n]

gives a list of all possible ways to partition the integer n into smaller integers.

IntegerPartitions[n,k]

gives partitions into at most k integers.

IntegerPartitions[n,{k}]

gives partitions into exactly k integers.

IntegerPartitions[n,{kmin,kmax}]

gives partitions into between kmin and kmax integers.

IntegerPartitions[n,kspec,{s1,s2,…}]

gives partitions involving only the si.

IntegerPartitions[n,kspec,sspec,m]

limits the result to the first m partitions.

Details
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Generalizations & Extensions  
Applications  
Properties & Relations  
Possible Issues  
See Also
Tech Notes
Related Guides
Related Links
History
Cite this Page
BUILT-IN SYMBOL
  • See Also
    • PartitionsP
    • Divisors
    • Subsets
    • IntegerDigits
    • NumberDecompose
    • FrobeniusSolve
    • PowersRepresentations
  • Related Guides
    • Number Theoretic Functions
    • Number Theory
    • Diophantine Equations
    • Additive Number Theory
    • Integer Functions
    • Discrete Mathematics
  • Tech Notes
    • Integer and Number Theoretic Functions
    • See Also
      • PartitionsP
      • Divisors
      • Subsets
      • IntegerDigits
      • NumberDecompose
      • FrobeniusSolve
      • PowersRepresentations
    • Related Guides
      • Number Theoretic Functions
      • Number Theory
      • Diophantine Equations
      • Additive Number Theory
      • Integer Functions
      • Discrete Mathematics
    • Tech Notes
      • Integer and Number Theoretic Functions

IntegerPartitions

IntegerPartitions[n]

gives a list of all possible ways to partition the integer n into smaller integers.

IntegerPartitions[n,k]

gives partitions into at most k integers.

IntegerPartitions[n,{k}]

gives partitions into exactly k integers.

IntegerPartitions[n,{kmin,kmax}]

gives partitions into between kmin and kmax integers.

IntegerPartitions[n,kspec,{s1,s2,…}]

gives partitions involving only the si.

IntegerPartitions[n,kspec,sspec,m]

limits the result to the first m partitions.

Details

  • Results from IntegerPartitions are normally given in reverse lexicographic order.
  • Length[IntegerPartitions[n]] is PartitionsP[n].
  • IntegerPartitions[n] is equivalent to IntegerPartitions[n,All].
  • IntegerPartitions[n,{kmin,kmax,dk}] gives partitions into kmin, kmin+dk, … integers.
  • n and the si can be rational numbers, and can be negative.
  • In the list of partitions, those involving earlier si are given last.
  • IntegerPartitions[n,kspec,sspec,-m] limits the result to the last m partitions.
  • In IntegerPartitions[n,kspec,sspec,m], a kspec of All corresponds to {0,Infinity}; an sspec of All corresponds to Range[n]; an m of All corresponds to Infinity.

Examples

open all close all

Basic Examples  (3)

All partitions of 5:

Partitions of 5 involving at most 3 terms:

Partitions of 5 involving at least 3 terms:

Scope  (6)

All partitions of 8:

Partitions of 8 into at most 3 integers:

Equivalently:

Partitions of 8 into exactly 3 integers:

Find partitions of 8 of even length only:

Find all partitions of 8 that involve only 1, 2, and 5:

Find the first 10 partitions of 15:

Find the last 3 partitions of 15:

Generalizations & Extensions  (2)

Find ways to form 3 from combinations of rational numbers:

Find partitions involving negative numbers:

Applications  (2)

Find the ways to make change for 156 cents with 10 or fewer standard coins:

Find "McNugget partitions" for 50:

Find the number of "McNugget partitions" for numbers up to 50:

Show integers that are not "McNuggetable":

The last case is exactly the corresponding Frobenius number:

Properties & Relations  (4)

Each sublist adds up to the original number:

The length of IntegerPartitions[n] is PartitionsP[n]:

IntegerPartitions gives results in reverse lexicographic order, not Sort order:

For integers below 10, generate IntegerPartitions order by converting to strings:

FrobeniusSolve gives coefficient lists for IntegerPartitions:

Possible Issues  (3)

IntegerPartitions cannot give an infinite list of partitions:

There are no integer partitions of 1/2:

There are, however, partitions into rationals:

If all items requested by the fourth argument are not present, a warning message is issued:

To suppress the message, use Off:

See Also

PartitionsP  Divisors  Subsets  IntegerDigits  NumberDecompose  FrobeniusSolve  PowersRepresentations

Function Repository: IntegerPartitionQ  IntegerCompositions  NextIntegerPartition  StrictIntegerCompositions  DominatingIntegerPartitionQ  IntegerPartitionFrequency  FrobeniusSymbolFromPartition  ConjugatePartition  FerrersDiagram  NumberOfTableaux  StandardYoungTableaux  TableauQ  RandomIntegerPartition

Tech Notes

    ▪
  • Integer and Number Theoretic Functions

Related Guides

    ▪
  • Number Theoretic Functions
  • ▪
  • Number Theory
  • ▪
  • Diophantine Equations
  • ▪
  • Additive Number Theory
  • ▪
  • Integer Functions
  • ▪
  • Discrete Mathematics

Related Links

  • MathWorld

History

Introduced in 2007 (6.0) | Updated in 2008 (7.0)

Wolfram Research (2007), IntegerPartitions, Wolfram Language function, https://reference.wolfram.com/language/ref/IntegerPartitions.html (updated 2008).

Text

Wolfram Research (2007), IntegerPartitions, Wolfram Language function, https://reference.wolfram.com/language/ref/IntegerPartitions.html (updated 2008).

CMS

Wolfram Language. 2007. "IntegerPartitions." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2008. https://reference.wolfram.com/language/ref/IntegerPartitions.html.

APA

Wolfram Language. (2007). IntegerPartitions. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/IntegerPartitions.html

BibTeX

@misc{reference.wolfram_2025_integerpartitions, author="Wolfram Research", title="{IntegerPartitions}", year="2008", howpublished="\url{https://reference.wolfram.com/language/ref/IntegerPartitions.html}", note=[Accessed: 01-May-2026]}

BibLaTeX

@online{reference.wolfram_2025_integerpartitions, organization={Wolfram Research}, title={IntegerPartitions}, year={2008}, url={https://reference.wolfram.com/language/ref/IntegerPartitions.html}, note=[Accessed: 01-May-2026]}

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