7,147,678

2 × 3573839

Starting at 7,147,678, the Collatz iteration reaches 1 after 266 steps. The first transition is 3573839; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 3573839

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 10,721,520

Proper Divisor Sum 3,573,842

Digit Sum / Digital Root 40 (Root: 4)

Adjacent Primes #7147663 ← → #7147681

Radix Representation

Decimal	7147678
Binary	11011010001000010011110 (23 bits)
Octal	0o33210236
Hexadecimal	0x6D109E

Divisor Catalog (4)

1 2 3,573,839 7,147,678

Collatz Trajectory (266 steps to reach 1)

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

7,147,678 3,573,839 10,721,518 5,360,759 16,082,278 8,041,139 24,123,418 12,061,709 36,185,128 18,092,564 9,046,282 4,523,141 13,569,424 6,784,712 3,392,356 1,696,178 848,089 2,544,268 1,272,134 636,067 1,908,202 954,101 2,862,304 1,431,152 715,576 357,788 178,894 89,447 268,342 134,171 402,514 201,257 603,772 301,886 150,943 452,830 226,415 679,246 339,623 1,018,870 509,435 1,528,306 764,153 2,292,460 1,146,230 573,115 1,719,346 859,673 2,579,020 1,289,510 644,755 1,934,266 967,133 2,901,400 1,450,700 725,350 362,675 1,088,026 544,013 1,632,040

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