9,990,115

5 × 1998023

Starting at 9,990,115, the Collatz iteration reaches 1 after 251 steps. The first transition is 29970346; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 1998023

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 11,988,144

Proper Divisor Sum 1,998,029

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #9990089 ← → #9990121

Radix Representation

Decimal	9990115
Binary	100110000110111111100011 (24 bits)
Octal	0o46067743
Hexadecimal	0x986FE3

Divisor Catalog (4)

1 5 1,998,023 9,990,115

Collatz Trajectory (251 steps to reach 1)

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

9,990,115 29,970,346 14,985,173 44,955,520 22,477,760 11,238,880 5,619,440 2,809,720 1,404,860 702,430 351,215 1,053,646 526,823 1,580,470 790,235 2,370,706 1,185,353 3,556,060 1,778,030 889,015 2,667,046 1,333,523 4,000,570 2,000,285 6,000,856 3,000,428 1,500,214 750,107 2,250,322 1,125,161 3,375,484 1,687,742 843,871 2,531,614 1,265,807 3,797,422 1,898,711 5,696,134 2,848,067 8,544,202 4,272,101 12,816,304 6,408,152 3,204,076 1,602,038 801,019 2,403,058 1,201,529 3,604,588 1,802,294 901,147 2,703,442 1,351,721 4,055,164 2,027,582 1,013,791 3,041,374 1,520,687 4,562,062 2,281,031

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