3 × 13 × 17 × 521

Prime Factor Structure

Factorization String 3 × 13 × 17 × 521

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 526,176

Proper Divisor Sum 180,753

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #345413 ← → #345431

1 3 13 17 39 51 221 521 663 1,563 6,773 8,857 20,319 26,571 115,141 345,423

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

345,423 1,036,270 518,135 1,554,406 777,203 2,331,610 1,165,805 3,497,416 1,748,708 874,354 437,177 1,311,532 655,766 327,883 983,650 491,825 1,475,476 737,738 368,869 1,106,608 553,304 276,652 138,326 69,163 207,490 103,745 311,236 155,618 77,809 233,428 116,714 58,357 175,072 87,536 43,768 21,884 10,942 5,471 16,414 8,207 24,622 12,311 36,934 18,467 55,402 27,701 83,104 41,552 20,776 10,388 5,194 2,597 7,792 3,896 1,948 974 487 1,462 731 2,194

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