5 × 13 × 31 × 1997

Prime Factor Structure

Factorization String 5 × 13 × 31 × 1997

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 5,370,624

Proper Divisor Sum 1,346,669

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #4023947 ← → #4023973

1 5 13 31 65 155 403 1,997 2,015 9,985 25,961 61,907 129,805 309,535 804,791 4,023,955

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

4,023,955 12,071,866 6,035,933 18,107,800 9,053,900 4,526,950 2,263,475 6,790,426 3,395,213 10,185,640 5,092,820 2,546,410 1,273,205 3,819,616 1,909,808 954,904 477,452 238,726 119,363 358,090 179,045 537,136 268,568 134,284 67,142 33,571 100,714 50,357 151,072 75,536 37,768 18,884 9,442 4,721 14,164 7,082 3,541 10,624 5,312 2,656 1,328 664 332 166 83 250 125 376 188 94 47 142 71 214 107 322 161 484 242 121

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