7,217,318

2 × 859 × 4201

Starting at 7,217,318, the Collatz iteration reaches 1 after 142 steps. The first transition is 3608659; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 859 × 4201

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 10,841,160

Proper Divisor Sum 3,623,842

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #7217281 ← → #7217323

Radix Representation

Decimal	7217318
Binary	11011100010000010100110 (23 bits)
Octal	0o33420246
Hexadecimal	0x6E20A6

Divisor Catalog (8)

1 2 859 1,718 4,201 8,402 3,608,659 7,217,318

Collatz Trajectory (142 steps to reach 1)

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

7,217,318 3,608,659 10,825,978 5,412,989 16,238,968 8,119,484 4,059,742 2,029,871 6,089,614 3,044,807 9,134,422 4,567,211 13,701,634 6,850,817 20,552,452 10,276,226 5,138,113 15,414,340 7,707,170 3,853,585 11,560,756 5,780,378 2,890,189 8,670,568 4,335,284 2,167,642 1,083,821 3,251,464 1,625,732 812,866 406,433 1,219,300 609,650 304,825 914,476 457,238 228,619 685,858 342,929 1,028,788 514,394 257,197 771,592 385,796 192,898 96,449 289,348 144,674 72,337 217,012 108,506 54,253 162,760 81,380 40,690 20,345 61,036 30,518 15,259 45,778

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