3 × 5 × 521

Prime Factor Structure

Factorization String 3 × 5 × 521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 12,528

Proper Divisor Sum 4,713

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #7793 ← → #7817

1 3 5 15 521 1,563 2,605 7,815

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

7,815 23,446 11,723 35,170 17,585 52,756 26,378 13,189 39,568 19,784 9,892 4,946 2,473 7,420 3,710 1,855 5,566 2,783 8,350 4,175 12,526 6,263 18,790 9,395 28,186 14,093 42,280 21,140 10,570 5,285 15,856 7,928 3,964 1,982 991 2,974 1,487 4,462 2,231 6,694 3,347 10,042 5,021 15,064 7,532 3,766 1,883 5,650 2,825 8,476 4,238 2,119 6,358 3,179 9,538 4,769 14,308 7,154 3,577 10,732

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