group-factors ( n -- seq )

Vocabulary

math.primes.factors

Inputs

n	a positive integer

Outputs

seq	a sequence

Word description

Return a sequence of pairs representing each prime factor in the number and its corresponding power (multiplicity).

Examples

USING: math.primes.factors prettyprint ; 300 group-factors .
{ { 2 2 } { 3 1 } { 5 2 } }

See also

divisors, factors, unique-factors

Definition

USING: math.statistics sorting ;

IN: math.primes.factors

: group-factors ( n -- seq ) factors histogram sort-keys ;
    flushable