2 × 521 × 661

Prime Factor Structure

Factorization String 2 × 521 × 661

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 1,036,692

Proper Divisor Sum 347,930

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #688757 ← → #688763

1 2 521 661 1,042 1,322 344,381 688,762

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

688,762 344,381 1,033,144 516,572 258,286 129,143 387,430 193,715 581,146 290,573 871,720 435,860 217,930 108,965 326,896 163,448 81,724 40,862 20,431 61,294 30,647 91,942 45,971 137,914 68,957 206,872 103,436 51,718 25,859 77,578 38,789 116,368 58,184 29,092 14,546 7,273 21,820 10,910 5,455 16,366 8,183 24,550 12,275 36,826 18,413 55,240 27,620 13,810 6,905 20,716 10,358 5,179 15,538 7,769 23,308 11,654 5,827 17,482 8,741 26,224

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