645,061

239 × 2699

Starting at 645,061, the Collatz iteration reaches 1 after 141 steps. The first transition is 1935184; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 239 × 2699

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 648,000

Proper Divisor Sum 2,939

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #645049 ← → #645067

Radix Representation

Decimal	645061
Binary	10011101011111000101 (20 bits)
Octal	0o2353705
Hexadecimal	0x9D7C5

Divisor Catalog (4)

1 239 2,699 645,061

Collatz Trajectory (141 steps to reach 1)

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

645,061 1,935,184 967,592 483,796 241,898 120,949 362,848 181,424 90,712 45,356 22,678 11,339 34,018 17,009 51,028 25,514 12,757 38,272 19,136 9,568 4,784 2,392 1,196 598 299 898 449 1,348 674 337 1,012 506 253 760 380 190 95 286 143 430 215 646 323 970 485 1,456 728 364 182 91 274 137 412 206 103 310 155 466 233 700

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