5 × 13 × 131 × 257

Prime Factor Structure

Factorization String 5 × 13 × 131 × 257

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,860,704

Proper Divisor Sum 672,349

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #2188349 ← → #2188409

1 5 13 65 131 257 655 1,285 1,703 3,341 8,515 16,705 33,667 168,335 437,671 2,188,355

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

2,188,355 6,565,066 3,282,533 9,847,600 4,923,800 2,461,900 1,230,950 615,475 1,846,426 923,213 2,769,640 1,384,820 692,410 346,205 1,038,616 519,308 259,654 129,827 389,482 194,741 584,224 292,112 146,056 73,028 36,514 18,257 54,772 27,386 13,693 41,080 20,540 10,270 5,135 15,406 7,703 23,110 11,555 34,666 17,333 52,000 26,000 13,000 6,500 3,250 1,625 4,876 2,438 1,219 3,658 1,829 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320

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