5² × 13 × 1979

Prime Factor Structure

Factorization String 5^2 × 13 × 1979

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 859,320

Proper Divisor Sum 216,145

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #643129 ← → #643183

1 5 13 25 65 325 1,979 9,895 25,727 49,475 128,635 643,175

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

643,175 1,929,526 964,763 2,894,290 1,447,145 4,341,436 2,170,718 1,085,359 3,256,078 1,628,039 4,884,118 2,442,059 7,326,178 3,663,089 10,989,268 5,494,634 2,747,317 8,241,952 4,120,976 2,060,488 1,030,244 515,122 257,561 772,684 386,342 193,171 579,514 289,757 869,272 434,636 217,318 108,659 325,978 162,989 488,968 244,484 122,242 61,121 183,364 91,682 45,841 137,524 68,762 34,381 103,144 51,572 25,786 12,893 38,680 19,340 9,670 4,835 14,506 7,253 21,760 10,880 5,440 2,720 1,360 680

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