251 × 521

Prime Factor Structure

Factorization String 251 × 521

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 131,544

Proper Divisor Sum 773

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #130769 ← → #130783

1 251 521 130,771

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

130,771 392,314 196,157 588,472 294,236 147,118 73,559 220,678 110,339 331,018 165,509 496,528 248,264 124,132 62,066 31,033 93,100 46,550 23,275 69,826 34,913 104,740 52,370 26,185 78,556 39,278 19,639 58,918 29,459 88,378 44,189 132,568 66,284 33,142 16,571 49,714 24,857 74,572 37,286 18,643 55,930 27,965 83,896 41,948 20,974 10,487 31,462 15,731 47,194 23,597 70,792 35,396 17,698 8,849 26,548 13,274 6,637 19,912 9,956 4,978

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