2 × 13 × 89 × 277

Prime Factor Structure

Factorization String 2 × 13 × 89 × 277

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,050,840

Proper Divisor Sum 409,862

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #640973 ← → #640993

1 2 13 26 89 178 277 554 1,157 2,314 3,601 7,202 24,653 49,306 320,489 640,978

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

640,978 320,489 961,468 480,734 240,367 721,102 360,551 1,081,654 540,827 1,622,482 811,241 2,433,724 1,216,862 608,431 1,825,294 912,647 2,737,942 1,368,971 4,106,914 2,053,457 6,160,372 3,080,186 1,540,093 4,620,280 2,310,140 1,155,070 577,535 1,732,606 866,303 2,598,910 1,299,455 3,898,366 1,949,183 5,847,550 2,923,775 8,771,326 4,385,663 13,156,990 6,578,495 19,735,486 9,867,743 29,603,230 14,801,615 44,404,846 22,202,423 66,607,270 33,303,635 99,910,906 49,955,453 149,866,360 74,933,180 37,466,590 18,733,295 56,199,886 28,099,943 84,299,830 42,149,915 126,449,746 63,224,873 189,674,620

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