13 × 31 × 1621

Prime Factor Structure

Factorization String 13 × 31 × 1621

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 726,656

Proper Divisor Sum 73,393

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #653243 ← → #653267

1 13 31 403 1,621 21,073 50,251 653,263

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

653,263 1,959,790 979,895 2,939,686 1,469,843 4,409,530 2,204,765 6,614,296 3,307,148 1,653,574 826,787 2,480,362 1,240,181 3,720,544 1,860,272 930,136 465,068 232,534 116,267 348,802 174,401 523,204 261,602 130,801 392,404 196,202 98,101 294,304 147,152 73,576 36,788 18,394 9,197 27,592 13,796 6,898 3,449 10,348 5,174 2,587 7,762 3,881 11,644 5,822 2,911 8,734 4,367 13,102 6,551 19,654 9,827 29,482 14,741 44,224 22,112 11,056 5,528 2,764 1,382 691

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