4,149,428

2² × 17 × 139 × 439

Starting at 4,149,428, the Collatz iteration reaches 1 after 198 steps. The first transition is 2074714; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 17 × 139 × 439

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 7,761,600

Proper Divisor Sum 3,612,172

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #4149427 ← → #4149433

Radix Representation

Decimal	4149428
Binary	1111110101000010110100 (22 bits)
Octal	0o17650264
Hexadecimal	0x3F50B4

Divisor Catalog (24)

1 2 4 17 34 68 139 278 439 556 878 1,756 2,363 4,726 7,463 9,452 14,926 29,852 61,021 122,042 244,084 1,037,357 2,074,714 4,149,428

Collatz Trajectory (198 steps to reach 1)

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

4,149,428 2,074,714 1,037,357 3,112,072 1,556,036 778,018 389,009 1,167,028 583,514 291,757 875,272 437,636 218,818 109,409 328,228 164,114 82,057 246,172 123,086 61,543 184,630 92,315 276,946 138,473 415,420 207,710 103,855 311,566 155,783 467,350 233,675 701,026 350,513 1,051,540 525,770 262,885 788,656 394,328 197,164 98,582 49,291 147,874 73,937 221,812 110,906 55,453 166,360 83,180 41,590 20,795 62,386 31,193 93,580 46,790 23,395 70,186 35,093 105,280 52,640 26,320

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