2 × 10510991

Prime Factor Structure

Factorization String 2 × 10510991

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 31,532,976

Proper Divisor Sum 10,510,994

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #21021953 ← → #21021989

1 2 10,510,991 21,021,982

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

21,021,982 10,510,991 31,532,974 15,766,487 47,299,462 23,649,731 70,949,194 35,474,597 106,423,792 53,211,896 26,605,948 13,302,974 6,651,487 19,954,462 9,977,231 29,931,694 14,965,847 44,897,542 22,448,771 67,346,314 33,673,157 101,019,472 50,509,736 25,254,868 12,627,434 6,313,717 18,941,152 9,470,576 4,735,288 2,367,644 1,183,822 591,911 1,775,734 887,867 2,663,602 1,331,801 3,995,404 1,997,702 998,851 2,996,554 1,498,277 4,494,832 2,247,416 1,123,708 561,854 280,927 842,782 421,391 1,264,174 632,087 1,896,262 948,131 2,844,394 1,422,197 4,266,592 2,133,296 1,066,648 533,324 266,662 133,331

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