13 × 19² × 137

Prime Factor Structure

Factorization String 13 × 19^2 × 137

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 736,092

Proper Divisor Sum 93,151

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #642937 ← → #642947

1 13 19 137 247 361 1,781 2,603 4,693 33,839 49,457 642,941

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

642,941 1,928,824 964,412 482,206 241,103 723,310 361,655 1,084,966 542,483 1,627,450 813,725 2,441,176 1,220,588 610,294 305,147 915,442 457,721 1,373,164 686,582 343,291 1,029,874 514,937 1,544,812 772,406 386,203 1,158,610 579,305 1,737,916 868,958 434,479 1,303,438 651,719 1,955,158 977,579 2,932,738 1,466,369 4,399,108 2,199,554 1,099,777 3,299,332 1,649,666 824,833 2,474,500 1,237,250 618,625 1,855,876 927,938 463,969 1,391,908 695,954 347,977 1,043,932 521,966 260,983 782,950 391,475 1,174,426 587,213 1,761,640 880,820

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.