720,487

293 × 2459

Starting at 720,487, the Collatz iteration reaches 1 after 149 steps. The first transition is 2161462; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 293 × 2459

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 723,240

Proper Divisor Sum 2,753

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #720481 ← → #720491

Radix Representation

Decimal	720487
Binary	10101111111001100111 (20 bits)
Octal	0o2577147
Hexadecimal	0xAFE67

Divisor Catalog (4)

1 293 2,459 720,487

Collatz Trajectory (149 steps to reach 1)

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

720,487 2,161,462 1,080,731 3,242,194 1,621,097 4,863,292 2,431,646 1,215,823 3,647,470 1,823,735 5,471,206 2,735,603 8,206,810 4,103,405 12,310,216 6,155,108 3,077,554 1,538,777 4,616,332 2,308,166 1,154,083 3,462,250 1,731,125 5,193,376 2,596,688 1,298,344 649,172 324,586 162,293 486,880 243,440 121,720 60,860 30,430 15,215 45,646 22,823 68,470 34,235 102,706 51,353 154,060 77,030 38,515 115,546 57,773 173,320 86,660 43,330 21,665 64,996 32,498 16,249 48,748 24,374 12,187 36,562 18,281 54,844 27,422

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