257 × 1559

Prime Factor Structure

Factorization String 257 × 1559

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 402,480

Proper Divisor Sum 1,817

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #400657 ← → #400679

1 257 1,559 400,663

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

400,663 1,201,990 600,995 1,802,986 901,493 2,704,480 1,352,240 676,120 338,060 169,030 84,515 253,546 126,773 380,320 190,160 95,080 47,540 23,770 11,885 35,656 17,828 8,914 4,457 13,372 6,686 3,343 10,030 5,015 15,046 7,523 22,570 11,285 33,856 16,928 8,464 4,232 2,116 1,058 529 1,588 794 397 1,192 596 298 149 448 224 112 56 28 14 7 22 11 34 17 52 26 13

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