1,648,355

5 × 329671

Starting at 1,648,355, the Collatz iteration reaches 1 after 119 steps. The first transition is 4945066; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 329671

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,978,032

Proper Divisor Sum 329,677

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #1648349 ← → #1648379

Radix Representation

Decimal	1648355
Binary	110010010011011100011 (21 bits)
Octal	0o6223343
Hexadecimal	0x1926E3

Divisor Catalog (4)

1 5 329,671 1,648,355

Collatz Trajectory (119 steps to reach 1)

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

1,648,355 4,945,066 2,472,533 7,417,600 3,708,800 1,854,400 927,200 463,600 231,800 115,900 57,950 28,975 86,926 43,463 130,390 65,195 195,586 97,793 293,380 146,690 73,345 220,036 110,018 55,009 165,028 82,514 41,257 123,772 61,886 30,943 92,830 46,415 139,246 69,623 208,870 104,435 313,306 156,653 469,960 234,980 117,490 58,745 176,236 88,118 44,059 132,178 66,089 198,268 99,134 49,567 148,702 74,351 223,054 111,527 334,582 167,291 501,874 250,937 752,812 376,406

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